Finding the Fourth Proportional to 8,472.79, 12,706.84 and 3,541.61

Step by Step Solution

1. Step 1: Write the proportion equation
   8,472.79 : 12,706.84 = 3,541.61 : x
2. Step 2: Convert to fraction form
   8,472.79/12,706.84 = 3,541.61/x
3. Step 3: Cross multiply
   8,472.79x = 12,706.84 × 3,541.61
4. Step 4: Simplify right side
   8,472.79x = 45,002,671.61
5. Step 5: Solve for x
   x = 45,002,671.61/8,472.79
6. Step 6: Final answer
   x = 5,311.43