Login to http://x10hosting.com/control/login.php with forums username and password.
Go to "Hosting" on TOP navigation, ----> Then Click on "update password". There you can change your password. put forums password in "Current Password" field.
Note: After this process, password for your client account, cPanel, and forums will become same.
As we have not received any replies i am marking this ticket as resolved. If you have any further issues please re-open this ticket or create a new one.