Finding the Fourth Proportional to 20,499.69, 30,746.46 and 5,707.08

Step by Step Solution

1. Step 1: Write the proportion equation
   20,499.69 : 30,746.46 = 5,707.08 : x
2. Step 2: Convert to fraction form
   20,499.69/30,746.46 = 5,707.08/x
3. Step 3: Cross multiply
   20,499.69x = 30,746.46 × 5,707.08
4. Step 4: Simplify right side
   20,499.69x = 175,472,506.94
5. Step 5: Solve for x
   x = 175,472,506.94/20,499.69
6. Step 6: Final answer
   x = 8,559.76