Finding the Fourth Proportional to 31,785.58, 43,863.69 and 17,638.12

Step by Step Solution

1. Step 1: Write the proportion equation
   31,785.58 : 43,863.69 = 17,638.12 : x
2. Step 2: Convert to fraction form
   31,785.58/43,863.69 = 17,638.12/x
3. Step 3: Cross multiply
   31,785.58x = 43,863.69 × 17,638.12
4. Step 4: Simplify right side
   31,785.58x = 773,673,027.86
5. Step 5: Solve for x
   x = 773,673,027.86/31,785.58
6. Step 6: Final answer
   x = 24,340.38