Finding the Fourth Proportional to 20,411.67, 30,624.34 and 7,932.11

Step by Step Solution

1. Step 1: Write the proportion equation
   20,411.67 : 30,624.34 = 7,932.11 : x
2. Step 2: Convert to fraction form
   20,411.67/30,624.34 = 7,932.11/x
3. Step 3: Cross multiply
   20,411.67x = 30,624.34 × 7,932.11
4. Step 4: Simplify right side
   20,411.67x = 242,915,633.56
5. Step 5: Solve for x
   x = 242,915,633.56/20,411.67
6. Step 6: Final answer
   x = 11,900.82