Finding the Fourth Proportional to 22,542.34, 31,101.71 and 12,981.97

Step by Step Solution

1. Step 1: Write the proportion equation
   22,542.34 : 31,101.71 = 12,981.97 : x
2. Step 2: Convert to fraction form
   22,542.34/31,101.71 = 12,981.97/x
3. Step 3: Cross multiply
   22,542.34x = 31,101.71 × 12,981.97
4. Step 4: Simplify right side
   22,542.34x = 403,761,488.82
5. Step 5: Solve for x
   x = 403,761,488.82/22,542.34
6. Step 6: Final answer
   x = 17,911.25