Finding the Fourth Proportional to 20,499.12, 30,743.76 and 5,708.52

Step by Step Solution

1. Step 1: Write the proportion equation
   20,499.12 : 30,743.76 = 5,708.52 : x
2. Step 2: Convert to fraction form
   20,499.12/30,743.76 = 5,708.52/x
3. Step 3: Cross multiply
   20,499.12x = 30,743.76 × 5,708.52
4. Step 4: Simplify right side
   20,499.12x = 175,501,368.84
5. Step 5: Solve for x
   x = 175,501,368.84/20,499.12
6. Step 6: Final answer
   x = 8,561.41