Finding the Fourth Proportional to 16,260.72, 22,440.72 and 9,187.76

Step by Step Solution

1. Step 1: Write the proportion equation
   16,260.72 : 22,440.72 = 9,187.76 : x
2. Step 2: Convert to fraction form
   16,260.72/22,440.72 = 9,187.76/x
3. Step 3: Cross multiply
   16,260.72x = 22,440.72 × 9,187.76
4. Step 4: Simplify right side
   16,260.72x = 206,179,949.59
5. Step 5: Solve for x
   x = 206,179,949.59/16,260.72
6. Step 6: Final answer
   x = 12,679.63