Finding the Fourth Proportional to 31,421.52, 43,363.46 and 17,989.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,421.52 : 43,363.46 = 17,989.69 : x
2. Step 2: Convert to fraction form
   31,421.52/43,363.46 = 17,989.69/x
3. Step 3: Cross multiply
   31,421.52x = 43,363.46 × 17,989.69
4. Step 4: Simplify right side
   31,421.52x = 780,095,202.73
5. Step 5: Solve for x
   x = 780,095,202.73/31,421.52
6. Step 6: Final answer
   x = 24,826.78