Finding the Fourth Proportional to 20,192.42, 30,283.92 and 7,707.86

Step by Step Solution

1. Step 1: Write the proportion equation
   20,192.42 : 30,283.92 = 7,707.86 : x
2. Step 2: Convert to fraction form
   20,192.42/30,283.92 = 7,707.86/x
3. Step 3: Cross multiply
   20,192.42x = 30,283.92 × 7,707.86
4. Step 4: Simplify right side
   20,192.42x = 233,424,215.61
5. Step 5: Solve for x
   x = 233,424,215.61/20,192.42
6. Step 6: Final answer
   x = 11,559.99