Finding the Fourth Proportional to 20,150.50, 30,225.68 and 5,359.42

Step by Step Solution

1. Step 1: Write the proportion equation
   20,150.50 : 30,225.68 = 5,359.42 : x
2. Step 2: Convert to fraction form
   20,150.50/30,225.68 = 5,359.42/x
3. Step 3: Cross multiply
   20,150.50x = 30,225.68 × 5,359.42
4. Step 4: Simplify right side
   20,150.50x = 161,992,113.91
5. Step 5: Solve for x
   x = 161,992,113.91/20,150.50
6. Step 6: Final answer
   x = 8,039.11