Finding the Fourth Proportional to 8,541.31, 12,787.05 and 5,244.41

Step by Step Solution

1. Step 1: Write the proportion equation
   8,541.31 : 12,787.05 = 5,244.41 : x
2. Step 2: Convert to fraction form
   8,541.31/12,787.05 = 5,244.41/x
3. Step 3: Cross multiply
   8,541.31x = 12,787.05 × 5,244.41
4. Step 4: Simplify right side
   8,541.31x = 67,060,532.89
5. Step 5: Solve for x
   x = 67,060,532.89/8,541.31
6. Step 6: Final answer
   x = 7,851.32