Finding the Fourth Proportional to 20,651.33, 30,978.16 and 5,859.08

Step by Step Solution

1. Step 1: Write the proportion equation
   20,651.33 : 30,978.16 = 5,859.08 : x
2. Step 2: Convert to fraction form
   20,651.33/30,978.16 = 5,859.08/x
3. Step 3: Cross multiply
   20,651.33x = 30,978.16 × 5,859.08
4. Step 4: Simplify right side
   20,651.33x = 181,503,517.69
5. Step 5: Solve for x
   x = 181,503,517.69/20,651.33
6. Step 6: Final answer
   x = 8,788.95