Finding the Fourth Proportional to 12,741.49, 17,550.23 and 9,151.17

Step by Step Solution

1. Step 1: Write the proportion equation
   12,741.49 : 17,550.23 = 9,151.17 : x
2. Step 2: Convert to fraction form
   12,741.49/17,550.23 = 9,151.17/x
3. Step 3: Cross multiply
   12,741.49x = 17,550.23 × 9,151.17
4. Step 4: Simplify right side
   12,741.49x = 160,605,138.27
5. Step 5: Solve for x
   x = 160,605,138.27/12,741.49
6. Step 6: Final answer
   x = 12,604.89