Finding the Fourth Proportional to 9,147.02, 12,622.80 and 5,168.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,147.02 : 12,622.80 = 5,168.15 : x
2. Step 2: Convert to fraction form
   9,147.02/12,622.80 = 5,168.15/x
3. Step 3: Cross multiply
   9,147.02x = 12,622.80 × 5,168.15
4. Step 4: Simplify right side
   9,147.02x = 65,236,527.42
5. Step 5: Solve for x
   x = 65,236,527.42/9,147.02
6. Step 6: Final answer
   x = 7,132.00