Finding the Fourth Proportional to 12,498.17, 17,241.89 and 8,243.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,498.17 : 17,241.89 = 8,243.78 : x
2. Step 2: Convert to fraction form
   12,498.17/17,241.89 = 8,243.78/x
3. Step 3: Cross multiply
   12,498.17x = 17,241.89 × 8,243.78
4. Step 4: Simplify right side
   12,498.17x = 142,138,220.52
5. Step 5: Solve for x
   x = 142,138,220.52/12,498.17
6. Step 6: Final answer
   x = 11,372.73