Finding the Fourth Proportional to 22,546.22, 31,117.59 and 13,120.25

Step by Step Solution

1. Step 1: Write the proportion equation
   22,546.22 : 31,117.59 = 13,120.25 : x
2. Step 2: Convert to fraction form
   22,546.22/31,117.59 = 13,120.25/x
3. Step 3: Cross multiply
   22,546.22x = 31,117.59 × 13,120.25
4. Step 4: Simplify right side
   22,546.22x = 408,270,404.61
5. Step 5: Solve for x
   x = 408,270,404.61/22,546.22
6. Step 6: Final answer
   x = 18,108.16