Finding the Fourth Proportional to 12,139.98, 16,757.31 and 7,360.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,139.98 : 16,757.31 = 7,360.14 : x
2. Step 2: Convert to fraction form
   12,139.98/16,757.31 = 7,360.14/x
3. Step 3: Cross multiply
   12,139.98x = 16,757.31 × 7,360.14
4. Step 4: Simplify right side
   12,139.98x = 123,336,147.62
5. Step 5: Solve for x
   x = 123,336,147.62/12,139.98
6. Step 6: Final answer
   x = 10,159.50