finding average of last 5 payments

hi Folks
Got this issue. A customer wants to find a way to calculate the average of the last 5 payments made to employees. I've attached a file with the required answer...of course people will finish at different times, they may not get paid every week. So essentially it means find the last 5 cells with entries in them and get the average..
finding-average-of-last-5-payments.xlsx
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agwalshAsked:
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krishnakrkcCommented:
Hi

There may be better ways...In M3 and copied down

=AVERAGE(INDEX(B3:L3,,LARGE(IF(B3:L3<>"",COLUMN(B3:L3)-COLUMN(B3)+1),5)):L3)

It's an array formula. Confirmed with CTRL+SHIFT+ENTER

Kris
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Rory ArchibaldCommented:
In M3:
=AVERAGE((INDEX(B3:L3,LARGE(IF(B3:L3<>"",COLUMN(B3:L3)-1),MIN(5,COUNT(B3:L3)))):L3))
entered with Ctrl+Shift+Enter, then fill down.

(the MIN part is there in case there are less than 5 numbers available)
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Pratik MakwanaData AnalystCommented:
attached is your excel with result...
finding-average-of-last-5-payments-1-res
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agwalshAuthor Commented:
@Rory Archibold and @ krishnakrkc. Thank you both for an elegant, wonderful formula. A Thing of Beauty indeed. I gave Rory the Best Solution because he wove the Min function into it. @Pratik. I gave you a lower score because I simply couldn't open the file you sent me.
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