Finding the Fourth Proportional to 5,152.55, 7,727.29 and 2,686.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,152.55 : 7,727.29 = 2,686.10 : x
2. Step 2: Convert to fraction form
   5,152.55/7,727.29 = 2,686.10/x
3. Step 3: Cross multiply
   5,152.55x = 7,727.29 × 2,686.10
4. Step 4: Simplify right side
   5,152.55x = 20,756,228.32
5. Step 5: Solve for x
   x = 20,756,228.32/5,152.55
6. Step 6: Final answer
   x = 4,028.34