Finding the Fourth Proportional to 6,320.12, 8,721.85 and 3,487.62

Step by Step Solution

1. Step 1: Write the proportion equation
   6,320.12 : 8,721.85 = 3,487.62 : x
2. Step 2: Convert to fraction form
   6,320.12/8,721.85 = 3,487.62/x
3. Step 3: Cross multiply
   6,320.12x = 8,721.85 × 3,487.62
4. Step 4: Simplify right side
   6,320.12x = 30,418,498.50
5. Step 5: Solve for x
   x = 30,418,498.50/6,320.12
6. Step 6: Final answer
   x = 4,812.96