Finding the Fourth Proportional to 12,490.48, 17,238.20 and 7,710.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,490.48 : 17,238.20 = 7,710.16 : x
2. Step 2: Convert to fraction form
   12,490.48/17,238.20 = 7,710.16/x
3. Step 3: Cross multiply
   12,490.48x = 17,238.20 × 7,710.16
4. Step 4: Simplify right side
   12,490.48x = 132,909,280.11
5. Step 5: Solve for x
   x = 132,909,280.11/12,490.48
6. Step 6: Final answer
   x = 10,640.85