Finding the Fourth Proportional to 6,401.80, 8,830.15 and 4,276.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,401.80 : 8,830.15 = 4,276.50 : x
2. Step 2: Convert to fraction form
   6,401.80/8,830.15 = 4,276.50/x
3. Step 3: Cross multiply
   6,401.80x = 8,830.15 × 4,276.50
4. Step 4: Simplify right side
   6,401.80x = 37,762,136.48
5. Step 5: Solve for x
   x = 37,762,136.48/6,401.80
6. Step 6: Final answer
   x = 5,898.67