Finding the Fourth Proportional to 12,711.75, 17,531.81 and 8,947.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,711.75 : 17,531.81 = 8,947.38 : x
2. Step 2: Convert to fraction form
   12,711.75/17,531.81 = 8,947.38/x
3. Step 3: Cross multiply
   12,711.75x = 17,531.81 × 8,947.38
4. Step 4: Simplify right side
   12,711.75x = 156,863,678.50
5. Step 5: Solve for x
   x = 156,863,678.50/12,711.75
6. Step 6: Final answer
   x = 12,340.05