Finding the Fourth Proportional to 31,648.83, 43,662.20 and 18,216.87

Step by Step Solution

1. Step 1: Write the proportion equation
   31,648.83 : 43,662.20 = 18,216.87 : x
2. Step 2: Convert to fraction form
   31,648.83/43,662.20 = 18,216.87/x
3. Step 3: Cross multiply
   31,648.83x = 43,662.20 × 18,216.87
4. Step 4: Simplify right side
   31,648.83x = 795,388,530.23
5. Step 5: Solve for x
   x = 795,388,530.23/31,648.83
6. Step 6: Final answer
   x = 25,131.69