Reporting Default gateway

I would like to report the default gateway of a host.  Currently my script is:

$esxi = Get-VMHost -Name $name | Get-View

$esxi | Select-Object @{N="ESXi";E={$_.Name}},@{N="CPU";E={$_.Summary.Hardware.CpuModel}}

How can I add a third property of the default gateway to the output of this?

Thanks!