Finding the Fourth Proportional to 22,480.88, 31,022.28 and 12,409.07

Step by Step Solution

1. Step 1: Write the proportion equation
   22,480.88 : 31,022.28 = 12,409.07 : x
2. Step 2: Convert to fraction form
   22,480.88/31,022.28 = 12,409.07/x
3. Step 3: Cross multiply
   22,480.88x = 31,022.28 × 12,409.07
4. Step 4: Simplify right side
   22,480.88x = 384,957,488.97
5. Step 5: Solve for x
   x = 384,957,488.97/22,480.88
6. Step 6: Final answer
   x = 17,123.78