You are given the following information for Lightning Power Co$.$ Assume the company$$s tax rate is $22$ percent.

Debt:

$22,0007\mathrm{.}1$ percent coupon bonds outstanding, $$1,000$ par value, $21$ years to maturity, selling for $107$ percent of par; the bonds make semiannual payments.

Common stock: $550,000$ shares outstanding, selling for $$73$ per share; beta is $1\mathrm{.}17.$

Preferred stock:

$24,500$ shares of $4\mathrm{.}9$ percent preferred stock outstanding, currently selling for $$94$ per share. The par value is $$100$ per share.

Market: $6$ percent market risk premium and $5\mathrm{.}2$ percent risk$-$free rate.

What is the company's WACC?