Finding the Fourth Proportional to 20,405.32, 30,608.37 and 5,614.18

Step by Step Solution

1. Step 1: Write the proportion equation
   20,405.32 : 30,608.37 = 5,614.18 : x
2. Step 2: Convert to fraction form
   20,405.32/30,608.37 = 5,614.18/x
3. Step 3: Cross multiply
   20,405.32x = 30,608.37 × 5,614.18
4. Step 4: Simplify right side
   20,405.32x = 171,840,898.69
5. Step 5: Solve for x
   x = 171,840,898.69/20,405.32
6. Step 6: Final answer
   x = 8,421.38