Finding the Fourth Proportional to 9,113.72, 12,577.02 and 5,134.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,113.72 : 12,577.02 = 5,134.92 : x
2. Step 2: Convert to fraction form
   9,113.72/12,577.02 = 5,134.92/x
3. Step 3: Cross multiply
   9,113.72x = 12,577.02 × 5,134.92
4. Step 4: Simplify right side
   9,113.72x = 64,581,991.54
5. Step 5: Solve for x
   x = 64,581,991.54/9,113.72
6. Step 6: Final answer
   x = 7,086.24