A block of mass $m$ slides on a rough surface and moves toward a spring with a spring constant $k=3173\frac{N}{m},$ as shown in the figure below. When the block is $d=18,9m$ away from the spring, it has a velocity of $v=15,9\frac{m}{s}.$ When the block momentarily stops, it has compressed the spring by $x=41cm.$ If the coefficient of kinetic friction between the block and the surface below is ${}_k=0,44,$ what is the mass of the block, $m=?$ Provide your answer with one decimal place. Take $g=9\mathrm{.}80\frac{m}{s^2}.$