Finding the Fourth Proportional to 6,200.72, 8,557.12 and 3,406.24

Step by Step Solution

1. Step 1: Write the proportion equation
   6,200.72 : 8,557.12 = 3,406.24 : x
2. Step 2: Convert to fraction form
   6,200.72/8,557.12 = 3,406.24/x
3. Step 3: Cross multiply
   6,200.72x = 8,557.12 × 3,406.24
4. Step 4: Simplify right side
   6,200.72x = 29,147,604.43
5. Step 5: Solve for x
   x = 29,147,604.43/6,200.72
6. Step 6: Final answer
   x = 4,700.68