Finding the Fourth Proportional to 6,168.55, 8,509.98 and 3,777.61

Step by Step Solution

1. Step 1: Write the proportion equation
   6,168.55 : 8,509.98 = 3,777.61 : x
2. Step 2: Convert to fraction form
   6,168.55/8,509.98 = 3,777.61/x
3. Step 3: Cross multiply
   6,168.55x = 8,509.98 × 3,777.61
4. Step 4: Simplify right side
   6,168.55x = 32,147,385.55
5. Step 5: Solve for x
   x = 32,147,385.55/6,168.55
6. Step 6: Final answer
   x = 5,211.50