Finding the Fourth Proportional to 22,560, 31,128.48 and 14,601.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,560 : 31,128.48 = 14,601.12 : x
2. Step 2: Convert to fraction form
   22,560/31,128.48 = 14,601.12/x
3. Step 3: Cross multiply
   22,560x = 31,128.48 × 14,601.12
4. Step 4: Simplify right side
   22,560x = 454,510,671.90
5. Step 5: Solve for x
   x = 454,510,671.90/22,560
6. Step 6: Final answer
   x = 20,146.75