Finding the Fourth Proportional to 12,437.25, 17,167.02 and 9,936.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,437.25 : 17,167.02 = 9,936.78 : x
2. Step 2: Convert to fraction form
   12,437.25/17,167.02 = 9,936.78/x
3. Step 3: Cross multiply
   12,437.25x = 17,167.02 × 9,936.78
4. Step 4: Simplify right side
   12,437.25x = 170,584,901.00
5. Step 5: Solve for x
   x = 170,584,901.00/12,437.25
6. Step 6: Final answer
   x = 13,715.64