Consider a three$-$year interest rate swap with annual swap payments. What is the theoretical fixed rate of the swap if current market reference rates $($MRRs$)$ are $3\mathrm{.}4722\%$ for one year, $3\mathrm{.}6568\%$ for two years and $3\mathrm{.}8794\%$ for three years. Write your answer in whole number form to four decimal places. Ignore the $\%$ sign e$.$g$.$ an answer of $6\mathrm{.}4515\%$ should be written as $6\mathrm{.}4515.$