Finding the Fourth Proportional to 22,551.41, 31,120.71 and 12,480.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,551.41 : 31,120.71 = 12,480.28 : x
2. Step 2: Convert to fraction form
   22,551.41/31,120.71 = 12,480.28/x
3. Step 3: Cross multiply
   22,551.41x = 31,120.71 × 12,480.28
4. Step 4: Simplify right side
   22,551.41x = 388,395,050.00
5. Step 5: Solve for x
   x = 388,395,050.00/22,551.41
6. Step 6: Final answer
   x = 17,222.65