Finding the Fourth Proportional to 12,494.17, 17,243.94 and 7,187.95

Step by Step Solution

1. Step 1: Write the proportion equation
   12,494.17 : 17,243.94 = 7,187.95 : x
2. Step 2: Convert to fraction form
   12,494.17/17,243.94 = 7,187.95/x
3. Step 3: Cross multiply
   12,494.17x = 17,243.94 × 7,187.95
4. Step 4: Simplify right side
   12,494.17x = 123,948,578.52
5. Step 5: Solve for x
   x = 123,948,578.52/12,494.17
6. Step 6: Final answer
   x = 9,920.51