Finding the Fourth Proportional to 12,882.13, 17,768.45 and 9,061.87

Step by Step Solution

1. Step 1: Write the proportion equation
   12,882.13 : 17,768.45 = 9,061.87 : x
2. Step 2: Convert to fraction form
   12,882.13/17,768.45 = 9,061.87/x
3. Step 3: Cross multiply
   12,882.13x = 17,768.45 × 9,061.87
4. Step 4: Simplify right side
   12,882.13x = 161,015,249.85
5. Step 5: Solve for x
   x = 161,015,249.85/12,882.13
6. Step 6: Final answer
   x = 12,499.12