Finding the Fourth Proportional to 22,551.47, 31,120.27 and 12,480.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,551.47 : 31,120.27 = 12,480.34 : x
2. Step 2: Convert to fraction form
   22,551.47/31,120.27 = 12,480.34/x
3. Step 3: Cross multiply
   22,551.47x = 31,120.27 × 12,480.34
4. Step 4: Simplify right side
   22,551.47x = 388,391,441.49
5. Step 5: Solve for x
   x = 388,391,441.49/22,551.47
6. Step 6: Final answer
   x = 17,222.44