Creating a look up table for X and Y variables

I've created a data array based on two variables X and Y and I'd like to allow users to find the correct value for any value within my data array that is equivilant to X and Y. It will make a lot more sense when you look at the example in the attached excel sheet. Thanks in advance to anyone that can help!!!

ncmay, you have the ranged for the MATCH's the wrong way round. It should be...
=INDEX(B2:M21,MATCH(E27,B2:B21,0),MATCH(E26,B2:M2,0))

(test using x=3000, y=15000)

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