Finding the Fourth Proportional to 22,451.42, 30,982.28 and 12,379.85

Step by Step Solution

1. Step 1: Write the proportion equation
   22,451.42 : 30,982.28 = 12,379.85 : x
2. Step 2: Convert to fraction form
   22,451.42/30,982.28 = 12,379.85/x
3. Step 3: Cross multiply
   22,451.42x = 30,982.28 × 12,379.85
4. Step 4: Simplify right side
   22,451.42x = 383,555,994.61
5. Step 5: Solve for x
   x = 383,555,994.61/22,451.42
6. Step 6: Final answer
   x = 17,083.82