Finding the Fourth Proportional to 9,304.20, 12,839.64 and 5,112.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,304.20 : 12,839.64 = 5,112.42 : x
2. Step 2: Convert to fraction form
   9,304.20/12,839.64 = 5,112.42/x
3. Step 3: Cross multiply
   9,304.20x = 12,839.64 × 5,112.42
4. Step 4: Simplify right side
   9,304.20x = 65,641,632.33
5. Step 5: Solve for x
   x = 65,641,632.33/9,304.20
6. Step 6: Final answer
   x = 7,055.05