Finding the Fourth Proportional to 20,399.52, 30,598.83 and 8,389.14

Step by Step Solution

1. Step 1: Write the proportion equation
   20,399.52 : 30,598.83 = 8,389.14 : x
2. Step 2: Convert to fraction form
   20,399.52/30,598.83 = 8,389.14/x
3. Step 3: Cross multiply
   20,399.52x = 30,598.83 × 8,389.14
4. Step 4: Simplify right side
   20,399.52x = 256,697,868.71
5. Step 5: Solve for x
   x = 256,697,868.71/20,399.52
6. Step 6: Final answer
   x = 12,583.52