Determine the weighted IRR value for last year's projects. Express your answer in percent form, but without the percent sign. For example, if the answer is $20\mathrm{.}256\%,$ then simply type in $20\mathrm{.}256.$ Do not convert to decimal answer $0\mathrm{.}20256$

$\backslash$table$[[\backslash$table$[[$Revenue of$],[$Investment$]],\backslash$table$[[$Internal Rate of$],[$Return$]],$Weight,Contribution$],[554,313,17\mathrm{.}3,?,?$