Finding the Fourth Proportional to 22,379.86, 30,884.72 and 12,308.86

Step by Step Solution

1. Step 1: Write the proportion equation
   22,379.86 : 30,884.72 = 12,308.86 : x
2. Step 2: Convert to fraction form
   22,379.86/30,884.72 = 12,308.86/x
3. Step 3: Cross multiply
   22,379.86x = 30,884.72 × 12,308.86
4. Step 4: Simplify right side
   22,379.86x = 380,155,694.62
5. Step 5: Solve for x
   x = 380,155,694.62/22,379.86
6. Step 6: Final answer
   x = 16,986.51