PL/SQL :: Round The Number To Nearest 10k

I am facing small issue, i need to round the number to the nearest 10k for some finance reporting

ex
1. if number is 2250 round to 10,000
2. if number is 5500 round to 10,000
3. if number is 4912345 round to 4920000
etc..

the number should always round up to nearest 10k..

I am using round function to achieve this..

case 1:-
SQL> Select round(2250,-4) From dual;

ROUND(2250,-4)
--------------
             0

I need 10,000 here..

case 2:-
SQL> Select round(5500 ,-4) From dual;

ROUND(5500,-4)
--------------
         10000

SQL>

This is working fine...

case 3:-
SQL> Select round(4912345 ,-4) From dual;

ROUND(4912345,-4)
-----------------
          4910000

This should round UP to 4920000

let me know if there is any way i can achieve this...