Part C $-$ Finding acceleration $($iII$)$

Finally, what is the numerical vaue of $a?$

View Available Hint$($s$)$

$4\mathrm{.}71$ meter $\frac{?}{?}$ second ${?}^2$

$22\mathrm{.}7$ meter $\frac{?}{?}$ second ${?}^2$

$a=4\mathrm{.}71$ kilogram $*$ meter$/$second ${?}^2$

$22\mathrm{.}7$ kilogram $*$ meter $\frac{?}{?}$ second ${?}^2$

$4\mathrm{.}71$ kilogram