You are given the following information for Lightning Power Co$.$ Assume the company$$s tax rate is $23$ percent.

Debt:

$18,0006\mathrm{.}7$ percent coupon bonds outstanding, $$1,000$ par value, $25$ years to maturity, selling for $108$ percent of par; the bonds make semiannual payments.

Common stock: $510,000$ shares outstanding, selling for $$69$ per share; beta is $1\mathrm{.}20.$

Preferred stock:

$22,500$ shares of $4\mathrm{.}5$ percent preferred stock outstanding, currently selling for $$90$ per share. The par value is $$100$ per share.

Market: $5$ percent market risk premium and $5\mathrm{.}6$ percent risk$-$free rate.

What is the company's WACC? $($Do not round intermediate calculations and enter your answer as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$