Finding the Fourth Proportional to 20,074.92, 30,114.06 and 8,389.16

Step by Step Solution

1. Step 1: Write the proportion equation
   20,074.92 : 30,114.06 = 8,389.16 : x
2. Step 2: Convert to fraction form
   20,074.92/30,114.06 = 8,389.16/x
3. Step 3: Cross multiply
   20,074.92x = 30,114.06 × 8,389.16
4. Step 4: Simplify right side
   20,074.92x = 252,631,667.59
5. Step 5: Solve for x
   x = 252,631,667.59/20,074.92
6. Step 6: Final answer
   x = 12,584.44