Finding the Fourth Proportional to 7,146.56, 9,862.24 and 4,002.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,146.56 : 9,862.24 = 4,002.72 : x
2. Step 2: Convert to fraction form
   7,146.56/9,862.24 = 4,002.72/x
3. Step 3: Cross multiply
   7,146.56x = 9,862.24 × 4,002.72
4. Step 4: Simplify right side
   7,146.56x = 39,475,785.29
5. Step 5: Solve for x
   x = 39,475,785.29/7,146.56
6. Step 6: Final answer
   x = 5,523.75