Finding the Fourth Proportional to 31,445.37, 43,388.31 and 18,020.83

Step by Step Solution

1. Step 1: Write the proportion equation
   31,445.37 : 43,388.31 = 18,020.83 : x
2. Step 2: Convert to fraction form
   31,445.37/43,388.31 = 18,020.83/x
3. Step 3: Cross multiply
   31,445.37x = 43,388.31 × 18,020.83
4. Step 4: Simplify right side
   31,445.37x = 781,893,358.50
5. Step 5: Solve for x
   x = 781,893,358.50/31,445.37
6. Step 6: Final answer
   x = 24,865.13