Finding the Fourth Proportional to 8,737.31, 12,057.72 and 4,960.64

Step by Step Solution

1. Step 1: Write the proportion equation
   8,737.31 : 12,057.72 = 4,960.64 : x
2. Step 2: Convert to fraction form
   8,737.31/12,057.72 = 4,960.64/x
3. Step 3: Cross multiply
   8,737.31x = 12,057.72 × 4,960.64
4. Step 4: Simplify right side
   8,737.31x = 59,813,947.85
5. Step 5: Solve for x
   x = 59,813,947.85/8,737.31
6. Step 6: Final answer
   x = 6,845.81