Finding the Fourth Proportional to 10,147.16, 15,221.12 and 4,952.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,147.16 : 15,221.12 = 4,952.88 : x
2. Step 2: Convert to fraction form
   10,147.16/15,221.12 = 4,952.88/x
3. Step 3: Cross multiply
   10,147.16x = 15,221.12 × 4,952.88
4. Step 4: Simplify right side
   10,147.16x = 75,388,380.83
5. Step 5: Solve for x
   x = 75,388,380.83/10,147.16
6. Step 6: Final answer
   x = 7,429.51