Try the free adobe dng-converter:
Adobe - Adobe Camera Raw and DNG Converter : For Macintosh
I don't know, if it supports your camera yet, but usually Adobe is pretty quick with new raw support.
And if the software that came with your camera has a raw converter, use that to develope the raw. Tiff will be nearly as good as dng, only need more storage.
Apple has just started to support Fuji cameras, so it it hard to predict, how long it will take, till your camera will be supported. You may want to shoot raw+jpeg and use the jpeg as original, until your camera will be supported, and later switch to the raw original.
Regards
Léonie