Finding the Fourth Proportional to 20,976.50, 31,464.61 and 8,496.34

Step by Step Solution

1. Step 1: Write the proportion equation
   20,976.50 : 31,464.61 = 8,496.34 : x
2. Step 2: Convert to fraction form
   20,976.50/31,464.61 = 8,496.34/x
3. Step 3: Cross multiply
   20,976.50x = 31,464.61 × 8,496.34
4. Step 4: Simplify right side
   20,976.50x = 267,333,924.63
5. Step 5: Solve for x
   x = 267,333,924.63/20,976.50
6. Step 6: Final answer
   x = 12,744.45