Finding the Fourth Proportional to 20,389.14, 30,578.17 and 5,594.56

Step by Step Solution

1. Step 1: Write the proportion equation
   20,389.14 : 30,578.17 = 5,594.56 : x
2. Step 2: Convert to fraction form
   20,389.14/30,578.17 = 5,594.56/x
3. Step 3: Cross multiply
   20,389.14x = 30,578.17 × 5,594.56
4. Step 4: Simplify right side
   20,389.14x = 171,071,406.76
5. Step 5: Solve for x
   x = 171,071,406.76/20,389.14
6. Step 6: Final answer
   x = 8,390.32