Finding the Fourth Proportional to 31,646.67, 43,665.15 and 18,215.46

Step by Step Solution

1. Step 1: Write the proportion equation
   31,646.67 : 43,665.15 = 18,215.46 : x
2. Step 2: Convert to fraction form
   31,646.67/43,665.15 = 18,215.46/x
3. Step 3: Cross multiply
   31,646.67x = 43,665.15 × 18,215.46
4. Step 4: Simplify right side
   31,646.67x = 795,380,793.22
5. Step 5: Solve for x
   x = 795,380,793.22/31,646.67
6. Step 6: Final answer
   x = 25,133.16