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You need an audio amplifier or 'receiver' to drive those speakers it appears

Those appear to be normal speakers (no built-in amplifier) so you need to connect an amplifier between your computer and the speakers.
 
I need help, to make my macbook work with my Panasonic Sound System speakers Model No. SB-FS900. They look like

Those speakers look like part of a stereo system. If so, round the back of the amplifier will be two (possibly one) Aux ports for plugging in extra audio devices. You need an audio cable, at one end of which is a 3.5 mm stereo plug to go into your Macbook, and at the other end (probably) two RCA plugs, one for each channel of the amplifier. Once your Macbook is connected, switch the amplifier to Aux and you should have sound from computer to speakers.
 
Connect the speakers to a stereo amplifier. Then you can connect the MacBook to the amp via cable, or use an Airport Express to connect wirelessly.
 
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