Finding the Fourth Proportional to 31,990.82, 44,161.48 and 20,665.83

Step by Step Solution

1. Step 1: Write the proportion equation
   31,990.82 : 44,161.48 = 20,665.83 : x
2. Step 2: Convert to fraction form
   31,990.82/44,161.48 = 20,665.83/x
3. Step 3: Cross multiply
   31,990.82x = 44,161.48 × 20,665.83
4. Step 4: Simplify right side
   31,990.82x = 912,633,586.56
5. Step 5: Solve for x
   x = 912,633,586.56/31,990.82
6. Step 6: Final answer
   x = 28,527.99