Finding the Fourth Proportional to 6,143.72, 8,477.71 and 3,490.61

Step by Step Solution

1. Step 1: Write the proportion equation
   6,143.72 : 8,477.71 = 3,490.61 : x
2. Step 2: Convert to fraction form
   6,143.72/8,477.71 = 3,490.61/x
3. Step 3: Cross multiply
   6,143.72x = 8,477.71 × 3,490.61
4. Step 4: Simplify right side
   6,143.72x = 29,592,328.19
5. Step 5: Solve for x
   x = 29,592,328.19/6,143.72
6. Step 6: Final answer
   x = 4,816.68