Finding the Fourth Proportional to 12,868, 17,758.92 and 8,150.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,868 : 17,758.92 = 8,150.56 : x
2. Step 2: Convert to fraction form
   12,868/17,758.92 = 8,150.56/x
3. Step 3: Cross multiply
   12,868x = 17,758.92 × 8,150.56
4. Step 4: Simplify right side
   12,868x = 144,745,143.00
5. Step 5: Solve for x
   x = 144,745,143.00/12,868
6. Step 6: Final answer
   x = 11,248.46