Finding the Fourth Proportional to 16,434.88, 22,676.16 and 9,358.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,434.88 : 22,676.16 = 9,358.72 : x
2. Step 2: Convert to fraction form
   16,434.88/22,676.16 = 9,358.72/x
3. Step 3: Cross multiply
   16,434.88x = 22,676.16 × 9,358.72
4. Step 4: Simplify right side
   16,434.88x = 212,219,832.12
5. Step 5: Solve for x
   x = 212,219,832.12/16,434.88
6. Step 6: Final answer
   x = 12,912.77