(ADPnews) - May 30, 2011 - Brazilian sugar and ethanol producer Cosan (SAO:CSAN3) posted a BRL 4.6 billion (USD 2.877bn/EUR 2.015bn) net revenue for the fourth quarter of the fiscal 2010/2011, ended on March 31, 2011, up 4.9% year-on-year, the company's preliminary data showed.