Finding the Fourth Proportional to 12,490.76, 17,237.22 and 7,186.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,490.76 : 17,237.22 = 7,186.62 : x
2. Step 2: Convert to fraction form
   12,490.76/17,237.22 = 7,186.62/x
3. Step 3: Cross multiply
   12,490.76x = 17,237.22 × 7,186.62
4. Step 4: Simplify right side
   12,490.76x = 123,877,350.00
5. Step 5: Solve for x
   x = 123,877,350.00/12,490.76
6. Step 6: Final answer
   x = 9,917.52