Finding the Fourth Proportional to 22,615.82, 31,208.56 and 12,543.54

Step by Step Solution

1. Step 1: Write the proportion equation
   22,615.82 : 31,208.56 = 12,543.54 : x
2. Step 2: Convert to fraction form
   22,615.82/31,208.56 = 12,543.54/x
3. Step 3: Cross multiply
   22,615.82x = 31,208.56 × 12,543.54
4. Step 4: Simplify right side
   22,615.82x = 391,465,820.70
5. Step 5: Solve for x
   x = 391,465,820.70/22,615.82
6. Step 6: Final answer
   x = 17,309.38