Finding the Fourth Proportional to 16,659.12, 22,989.06 and 9,105.24

Step by Step Solution

1. Step 1: Write the proportion equation
   16,659.12 : 22,989.06 = 9,105.24 : x
2. Step 2: Convert to fraction form
   16,659.12/22,989.06 = 9,105.24/x
3. Step 3: Cross multiply
   16,659.12x = 22,989.06 × 9,105.24
4. Step 4: Simplify right side
   16,659.12x = 209,320,908.67
5. Step 5: Solve for x
   x = 209,320,908.67/16,659.12
6. Step 6: Final answer
   x = 12,564.94