Finding the Fourth Proportional to 20,789.16, 31,176.60 and 5,994.12

Step by Step Solution

1. Step 1: Write the proportion equation
   20,789.16 : 31,176.60 = 5,994.12 : x
2. Step 2: Convert to fraction form
   20,789.16/31,176.60 = 5,994.12/x
3. Step 3: Cross multiply
   20,789.16x = 31,176.60 × 5,994.12
4. Step 4: Simplify right side
   20,789.16x = 186,876,281.59
5. Step 5: Solve for x
   x = 186,876,281.59/20,789.16
6. Step 6: Final answer
   x = 8,989.12