Finding the Fourth Proportional to 20,271.37, 30,377.89 and 8,568.49

Step by Step Solution

1. Step 1: Write the proportion equation
   20,271.37 : 30,377.89 = 8,568.49 : x
2. Step 2: Convert to fraction form
   20,271.37/30,377.89 = 8,568.49/x
3. Step 3: Cross multiply
   20,271.37x = 30,377.89 × 8,568.49
4. Step 4: Simplify right side
   20,271.37x = 260,292,646.69
5. Step 5: Solve for x
   x = 260,292,646.69/20,271.37
6. Step 6: Final answer
   x = 12,840.41