Finding the Fourth Proportional to 21,284.96, 31,912.61 and 9,432.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,284.96 : 31,912.61 = 9,432.27 : x
2. Step 2: Convert to fraction form
   21,284.96/31,912.61 = 9,432.27/x
3. Step 3: Cross multiply
   21,284.96x = 31,912.61 × 9,432.27
4. Step 4: Simplify right side
   21,284.96x = 301,008,306.76
5. Step 5: Solve for x
   x = 301,008,306.76/21,284.96
6. Step 6: Final answer
   x = 14,141.83