Finding the Fourth Proportional to 12,321.12, 17,003.04 and 7,606.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,321.12 : 17,003.04 = 7,606.56 : x
2. Step 2: Convert to fraction form
   12,321.12/17,003.04 = 7,606.56/x
3. Step 3: Cross multiply
   12,321.12x = 17,003.04 × 7,606.56
4. Step 4: Simplify right side
   12,321.12x = 129,334,643.94
5. Step 5: Solve for x
   x = 129,334,643.94/12,321.12
6. Step 6: Final answer
   x = 10,496.99