Finding the Fourth Proportional to 20,744.94, 31,117.50 and 5,162.56

Step by Step Solution

1. Step 1: Write the proportion equation
   20,744.94 : 31,117.50 = 5,162.56 : x
2. Step 2: Convert to fraction form
   20,744.94/31,117.50 = 5,162.56/x
3. Step 3: Cross multiply
   20,744.94x = 31,117.50 × 5,162.56
4. Step 4: Simplify right side
   20,744.94x = 160,645,960.80
5. Step 5: Solve for x
   x = 160,645,960.80/20,744.94
6. Step 6: Final answer
   x = 7,743.86