Finding the Fourth Proportional to 5,168.10, 7,142.48 and 3,908.73

Step by Step Solution

1. Step 1: Write the proportion equation
   5,168.10 : 7,142.48 = 3,908.73 : x
2. Step 2: Convert to fraction form
   5,168.10/7,142.48 = 3,908.73/x
3. Step 3: Cross multiply
   5,168.10x = 7,142.48 × 3,908.73
4. Step 4: Simplify right side
   5,168.10x = 27,918,025.85
5. Step 5: Solve for x
   x = 27,918,025.85/5,168.10
6. Step 6: Final answer
   x = 5,401.99