Finding the Fourth Proportional to 22,551.46, 31,120.38 and 12,480.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,551.46 : 31,120.38 = 12,480.32 : x
2. Step 2: Convert to fraction form
   22,551.46/31,120.38 = 12,480.32/x
3. Step 3: Cross multiply
   22,551.46x = 31,120.38 × 12,480.32
4. Step 4: Simplify right side
   22,551.46x = 388,392,300.92
5. Step 5: Solve for x
   x = 388,392,300.92/22,551.46
6. Step 6: Final answer
   x = 17,222.49