Finding the Fourth Proportional to 39,342.50, 59,007.83 and 12,685.06

Step by Step Solution

1. Step 1: Write the proportion equation
   39,342.50 : 59,007.83 = 12,685.06 : x
2. Step 2: Convert to fraction form
   39,342.50/59,007.83 = 12,685.06/x
3. Step 3: Cross multiply
   39,342.50x = 59,007.83 × 12,685.06
4. Step 4: Simplify right side
   39,342.50x = 748,517,568.98
5. Step 5: Solve for x
   x = 748,517,568.98/39,342.50
6. Step 6: Final answer
   x = 19,025.68