Finding the Fourth Proportional to 12,490.52, 17,238.81 and 7,184.99

Step by Step Solution

1. Step 1: Write the proportion equation
   12,490.52 : 17,238.81 = 7,184.99 : x
2. Step 2: Convert to fraction form
   12,490.52/17,238.81 = 7,184.99/x
3. Step 3: Cross multiply
   12,490.52x = 17,238.81 × 7,184.99
4. Step 4: Simplify right side
   12,490.52x = 123,860,677.46
5. Step 5: Solve for x
   x = 123,860,677.46/12,490.52
6. Step 6: Final answer
   x = 9,916.37