Finding the Fourth Proportional to 12,498.69, 17,204.31 and 11,317.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,498.69 : 17,204.31 = 11,317.71 : x
2. Step 2: Convert to fraction form
   12,498.69/17,204.31 = 11,317.71/x
3. Step 3: Cross multiply
   12,498.69x = 17,204.31 × 11,317.71
4. Step 4: Simplify right side
   12,498.69x = 194,713,391.33
5. Step 5: Solve for x
   x = 194,713,391.33/12,498.69
6. Step 6: Final answer
   x = 15,578.70