Finding the Fourth Proportional to 6,390.40, 8,818.72 and 3,595.92

Step by Step Solution

1. Step 1: Write the proportion equation
   6,390.40 : 8,818.72 = 3,595.92 : x
2. Step 2: Convert to fraction form
   6,390.40/8,818.72 = 3,595.92/x
3. Step 3: Cross multiply
   6,390.40x = 8,818.72 × 3,595.92
4. Step 4: Simplify right side
   6,390.40x = 31,711,411.62
5. Step 5: Solve for x
   x = 31,711,411.62/6,390.40
6. Step 6: Final answer
   x = 4,962.35