Finding the Fourth Proportional to 20,499.50, 30,748.71 and 5,707.82

Step by Step Solution

1. Step 1: Write the proportion equation
   20,499.50 : 30,748.71 = 5,707.82 : x
2. Step 2: Convert to fraction form
   20,499.50/30,748.71 = 5,707.82/x
3. Step 3: Cross multiply
   20,499.50x = 30,748.71 × 5,707.82
4. Step 4: Simplify right side
   20,499.50x = 175,508,101.91
5. Step 5: Solve for x
   x = 175,508,101.91/20,499.50
6. Step 6: Final answer
   x = 8,561.58