Finding the Fourth Proportional to 12,168.97, 16,789.75 and 8,141.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,168.97 : 16,789.75 = 8,141.72 : x
2. Step 2: Convert to fraction form
   12,168.97/16,789.75 = 8,141.72/x
3. Step 3: Cross multiply
   12,168.97x = 16,789.75 × 8,141.72
4. Step 4: Simplify right side
   12,168.97x = 136,697,339.07
5. Step 5: Solve for x
   x = 136,697,339.07/12,168.97
6. Step 6: Final answer
   x = 11,233.27