Problem $4-18$ Growth and Profit Margin $[$LO$3]$

Gamgee Company wishes to maintain a growth rate of $13\mathrm{.}2$ percent per year, a debtequity ratio of $1\mathrm{.}6,$ and a dividend payout ratio of $25$ percent. The ratio of total assets to sales is constant at $\mathrm{.}96.$ What profit margin must the firm achieve? $($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$