Finding the Fourth Proportional to 31,786.82, 43,866.72 and 17,640.58

Step by Step Solution

1. Step 1: Write the proportion equation
   31,786.82 : 43,866.72 = 17,640.58 : x
2. Step 2: Convert to fraction form
   31,786.82/43,866.72 = 17,640.58/x
3. Step 3: Cross multiply
   31,786.82x = 43,866.72 × 17,640.58
4. Step 4: Simplify right side
   31,786.82x = 773,834,164.16
5. Step 5: Solve for x
   x = 773,834,164.16/31,786.82
6. Step 6: Final answer
   x = 24,344.50