Finding the Fourth Proportional to 20,651.82, 30,978.91 and 5,859.58

Step by Step Solution

1. Step 1: Write the proportion equation
   20,651.82 : 30,978.91 = 5,859.58 : x
2. Step 2: Convert to fraction form
   20,651.82/30,978.91 = 5,859.58/x
3. Step 3: Cross multiply
   20,651.82x = 30,978.91 × 5,859.58
4. Step 4: Simplify right side
   20,651.82x = 181,523,401.46
5. Step 5: Solve for x
   x = 181,523,401.46/20,651.82
6. Step 6: Final answer
   x = 8,789.70