SQL stored proc max date issue

Question

I have a issue with getting the MAX DATE from a stored procedure.

Basically, I have a list of exchange rates with date of capture, which are captured daily stored within a table and I wish to return the latest value.

Here is the code I am working on..

select  
distinct t.source_currency_code, t.target_currency_code,
'(' + t.source_currency_code + ') '  + s.currency_name as source_currency_name, 
'(' + t.target_currency_code + ') '  + x.currency_name as target_currency_name,
t.converted_amount as buy_rate,
t.date_loaded as date_loaded

from texchange_rate t, tcurrency s, tcurrency x

where 
s.currency_code = t.source_currency_code and 
x.currency_code = t.target_currency_code

order by  t.source_currency_code

My thought was to MAX(.t.date_loaded grouped by currency_code) but that does not work...

Any help is appreciated!