Finding the Fourth Proportional to 16,408.72, 22,644.18 and 9,334.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,408.72 : 22,644.18 = 9,334.72 : x
2. Step 2: Convert to fraction form
   16,408.72/22,644.18 = 9,334.72/x
3. Step 3: Cross multiply
   16,408.72x = 22,644.18 × 9,334.72
4. Step 4: Simplify right side
   16,408.72x = 211,377,079.93
5. Step 5: Solve for x
   x = 211,377,079.93/16,408.72
6. Step 6: Final answer
   x = 12,882.00