Finding the Fourth Proportional to 20,304.53, 30,452.61 and 7,820.27

Step by Step Solution

1. Step 1: Write the proportion equation
   20,304.53 : 30,452.61 = 7,820.27 : x
2. Step 2: Convert to fraction form
   20,304.53/30,452.61 = 7,820.27/x
3. Step 3: Cross multiply
   20,304.53x = 30,452.61 × 7,820.27
4. Step 4: Simplify right side
   20,304.53x = 238,147,632.40
5. Step 5: Solve for x
   x = 238,147,632.40/20,304.53
6. Step 6: Final answer
   x = 11,728.79