Given the following information on Big Brothers, Inc. capital structure, compute the company$$s weighted average cost of capital $($WACC$).$ The company$$s marginal tax rate is $40\%.$

Round the answer to two decimal places in percentage form. $($Write the percentage sign in the "units" box$)$

Type of Capital Percent of Capital Structure Before$-$Tax Component Cost

Bonds $52\%9\mathrm{.}55\%$

Preferred Stock $19\%17\mathrm{.}45\%$

Common Stock Please calculate it $12\mathrm{.}66\%$