Finding the Fourth Proportional to 31,518.81, 43,496.10 and 17,372.61

Step by Step Solution

1. Step 1: Write the proportion equation
   31,518.81 : 43,496.10 = 17,372.61 : x
2. Step 2: Convert to fraction form
   31,518.81/43,496.10 = 17,372.61/x
3. Step 3: Cross multiply
   31,518.81x = 43,496.10 × 17,372.61
4. Step 4: Simplify right side
   31,518.81x = 755,640,781.82
5. Step 5: Solve for x
   x = 755,640,781.82/31,518.81
6. Step 6: Final answer
   x = 23,974.28