Finding the Fourth Proportional to 20,164.86, 30,250.53 and 8,481.42

Step by Step Solution

1. Step 1: Write the proportion equation
   20,164.86 : 30,250.53 = 8,481.42 : x
2. Step 2: Convert to fraction form
   20,164.86/30,250.53 = 8,481.42/x
3. Step 3: Cross multiply
   20,164.86x = 30,250.53 × 8,481.42
4. Step 4: Simplify right side
   20,164.86x = 256,567,450.15
5. Step 5: Solve for x
   x = 256,567,450.15/20,164.86
6. Step 6: Final answer
   x = 12,723.49