Finding the Fourth Proportional to 22,379, 30,883.92 and 13,423.24

Step by Step Solution

1. Step 1: Write the proportion equation
   22,379 : 30,883.92 = 13,423.24 : x
2. Step 2: Convert to fraction form
   22,379/30,883.92 = 13,423.24/x
3. Step 3: Cross multiply
   22,379x = 30,883.92 × 13,423.24
4. Step 4: Simplify right side
   22,379x = 414,562,270.30
5. Step 5: Solve for x
   x = 414,562,270.30/22,379
6. Step 6: Final answer
   x = 18,524.61