$($b$)$ Develop three$-$month and four$-$month moving averages for this time series. $($Round your answers to two decimal places.$)$

$\backslash$table$[[$Month$,\backslash$table$[[$Time Series$],[$Value$]],\backslash$table$[[3-$Month Moving$],[$Average Forecast$]],\backslash$table$[[4-$Month Moving$],[$Average Forecast$]]],[1,9\mathrm{.}6,,],[2,9\mathrm{.}3,,],[3,9\mathrm{.}5,,],[4,9\mathrm{.}7,,],[5,9\mathrm{.}8,,],[6,9\mathrm{.}8,,],[7,9\mathrm{.}8,,],[8,10\mathrm{.}5,,],[9,10\mathrm{.}0,,],[10,9\mathrm{.}8,,],[11,9\mathrm{.}6,,],[12,9\mathrm{.}6,,]]$