Certificates and Apache Web Server

Hello, I'm using Apache 2 as reverse proxy:

client --SSL---> reverse proxy (apache) - SLL-->other servers

The Client certificate is used by reverse proxy for access to my other
server, but now I have a big problem. One of my servers need a client
certificate to authenticate the client and access, but this
certificate is load in apache (my reverse proxy) and I don't know how
pass this certificate to this server and access to the other server,
and authenticate the client in the "other" server.

Is it possible?