Finding the Fourth Proportional to 3,900.72, 5,862.24 and 3,755.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,900.72 : 5,862.24 = 3,755.28 : x
2. Step 2: Convert to fraction form
   3,900.72/5,862.24 = 3,755.28/x
3. Step 3: Cross multiply
   3,900.72x = 5,862.24 × 3,755.28
4. Step 4: Simplify right side
   3,900.72x = 22,014,352.63
5. Step 5: Solve for x
   x = 22,014,352.63/3,900.72
6. Step 6: Final answer
   x = 5,643.66