Finding the Fourth Proportional to 16,676.92, 23,013.32 and 9,123.40

Step by Step Solution

1. Step 1: Write the proportion equation
   16,676.92 : 23,013.32 = 9,123.40 : x
2. Step 2: Convert to fraction form
   16,676.92/23,013.32 = 9,123.40/x
3. Step 3: Cross multiply
   16,676.92x = 23,013.32 × 9,123.40
4. Step 4: Simplify right side
   16,676.92x = 209,959,723.69
5. Step 5: Solve for x
   x = 209,959,723.69/16,676.92
6. Step 6: Final answer
   x = 12,589.84