Finding the Fourth Proportional to 20,381.33, 30,568.71 and 5,586.81

Step by Step Solution

1. Step 1: Write the proportion equation
   20,381.33 : 30,568.71 = 5,586.81 : x
2. Step 2: Convert to fraction form
   20,381.33/30,568.71 = 5,586.81/x
3. Step 3: Cross multiply
   20,381.33x = 30,568.71 × 5,586.81
4. Step 4: Simplify right side
   20,381.33x = 170,781,574.72
5. Step 5: Solve for x
   x = 170,781,574.72/20,381.33
6. Step 6: Final answer
   x = 8,379.32