Finding the Fourth Proportional to 2,672.32, 3,989.20 and 2,552.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,672.32 : 3,989.20 = 2,552.52 : x
2. Step 2: Convert to fraction form
   2,672.32/3,989.20 = 2,552.52/x
3. Step 3: Cross multiply
   2,672.32x = 3,989.20 × 2,552.52
4. Step 4: Simplify right side
   2,672.32x = 10,182,512.78
5. Step 5: Solve for x
   x = 10,182,512.78/2,672.32
6. Step 6: Final answer
   x = 3,810.36