Finding the Fourth Proportional to 16,658.84, 22,989.18 and 9,105.22

Step by Step Solution

1. Step 1: Write the proportion equation
   16,658.84 : 22,989.18 = 9,105.22 : x
2. Step 2: Convert to fraction form
   16,658.84/22,989.18 = 9,105.22/x
3. Step 3: Cross multiply
   16,658.84x = 22,989.18 × 9,105.22
4. Step 4: Simplify right side
   16,658.84x = 209,321,541.52
5. Step 5: Solve for x
   x = 209,321,541.52/16,658.84
6. Step 6: Final answer
   x = 12,565.19