How Do I get the products to show 4 to a row not 3 when I use shortcodes?

When I use short-codes the products only show gridview in 3 to a row not 4 see code I am using below:

[mp_list_global_products paginate=”1″ page=”0″ per_page=”4″ “thumbnail_size=150” ]

I was told to change the .css before to

#content #mp_product_list .product { padding:9px; min-height:315px; }

and it worked until recently after upgraded to newer theme version it does not seem to work anymore.