Finding the Fourth Proportional to 9,147.55, 12,623.17 and 5,114.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,147.55 : 12,623.17 = 5,114.56 : x
2. Step 2: Convert to fraction form
   9,147.55/12,623.17 = 5,114.56/x
3. Step 3: Cross multiply
   9,147.55x = 12,623.17 × 5,114.56
4. Step 4: Simplify right side
   9,147.55x = 64,561,871.67
5. Step 5: Solve for x
   x = 64,561,871.67/9,147.55
6. Step 6: Final answer
   x = 7,057.84