Finding the Fourth Proportional to 16,513.76, 22,788.90 and 8,960.24

Step by Step Solution

1. Step 1: Write the proportion equation
   16,513.76 : 22,788.90 = 8,960.24 : x
2. Step 2: Convert to fraction form
   16,513.76/22,788.90 = 8,960.24/x
3. Step 3: Cross multiply
   16,513.76x = 22,788.90 × 8,960.24
4. Step 4: Simplify right side
   16,513.76x = 204,194,013.34
5. Step 5: Solve for x
   x = 204,194,013.34/16,513.76
6. Step 6: Final answer
   x = 12,365.08