Finding the Fourth Proportional to 12,490.32, 17,235.36 and 7,184.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,490.32 : 17,235.36 = 7,184.10 : x
2. Step 2: Convert to fraction form
   12,490.32/17,235.36 = 7,184.10/x
3. Step 3: Cross multiply
   12,490.32x = 17,235.36 × 7,184.10
4. Step 4: Simplify right side
   12,490.32x = 123,820,549.78
5. Step 5: Solve for x
   x = 123,820,549.78/12,490.32
6. Step 6: Final answer
   x = 9,913.32