Finding the Fourth Proportional to 31,565.82, 43,564.71 and 18,137.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,565.82 : 43,564.71 = 18,137.05 : x
2. Step 2: Convert to fraction form
   31,565.82/43,564.71 = 18,137.05/x
3. Step 3: Cross multiply
   31,565.82x = 43,564.71 × 18,137.05
4. Step 4: Simplify right side
   31,565.82x = 790,135,323.51
5. Step 5: Solve for x
   x = 790,135,323.51/31,565.82
6. Step 6: Final answer
   x = 25,031.36