Finding the Fourth Proportional to 5,172.57, 7,135.15 and 3,754.62

Step by Step Solution

1. Step 1: Write the proportion equation
   5,172.57 : 7,135.15 = 3,754.62 : x
2. Step 2: Convert to fraction form
   5,172.57/7,135.15 = 3,754.62/x
3. Step 3: Cross multiply
   5,172.57x = 7,135.15 × 3,754.62
4. Step 4: Simplify right side
   5,172.57x = 26,789,776.89
5. Step 5: Solve for x
   x = 26,789,776.89/5,172.57
6. Step 6: Final answer
   x = 5,179.20