Finding the Fourth Proportional to 16,231.89, 22,401.05 and 9,155.73

Step by Step Solution

1. Step 1: Write the proportion equation
   16,231.89 : 22,401.05 = 9,155.73 : x
2. Step 2: Convert to fraction form
   16,231.89/22,401.05 = 9,155.73/x
3. Step 3: Cross multiply
   16,231.89x = 22,401.05 × 9,155.73
4. Step 4: Simplify right side
   16,231.89x = 205,097,919.74
5. Step 5: Solve for x
   x = 205,097,919.74/16,231.89
6. Step 6: Final answer
   x = 12,635.49