Finding the Fourth Proportional to 20,629.30, 30,954.18 and 8,158.27

Step by Step Solution

1. Step 1: Write the proportion equation
   20,629.30 : 30,954.18 = 8,158.27 : x
2. Step 2: Convert to fraction form
   20,629.30/30,954.18 = 8,158.27/x
3. Step 3: Cross multiply
   20,629.30x = 30,954.18 × 8,158.27
4. Step 4: Simplify right side
   20,629.30x = 252,532,569.32
5. Step 5: Solve for x
   x = 252,532,569.32/20,629.30
6. Step 6: Final answer
   x = 12,241.45