Finding the Fourth Proportional to 16,608.88, 22,920.25 and 9,156.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,608.88 : 22,920.25 = 9,156.88 : x
2. Step 2: Convert to fraction form
   16,608.88/22,920.25 = 9,156.88/x
3. Step 3: Cross multiply
   16,608.88x = 22,920.25 × 9,156.88
4. Step 4: Simplify right side
   16,608.88x = 209,877,864.22
5. Step 5: Solve for x
   x = 209,877,864.22/16,608.88
6. Step 6: Final answer
   x = 12,636.49