Finding the Fourth Proportional to 12,610.59, 17,398.45 and 8,137.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,610.59 : 17,398.45 = 8,137.32 : x
2. Step 2: Convert to fraction form
   12,610.59/17,398.45 = 8,137.32/x
3. Step 3: Cross multiply
   12,610.59x = 17,398.45 × 8,137.32
4. Step 4: Simplify right side
   12,610.59x = 141,576,669.57
5. Step 5: Solve for x
   x = 141,576,669.57/12,610.59
6. Step 6: Final answer
   x = 11,226.80