Finding the Fourth Proportional to 9,304.31, 12,839.96 and 5,112.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,304.31 : 12,839.96 = 5,112.56 : x
2. Step 2: Convert to fraction form
   9,304.31/12,839.96 = 5,112.56/x
3. Step 3: Cross multiply
   9,304.31x = 12,839.96 × 5,112.56
4. Step 4: Simplify right side
   9,304.31x = 65,645,072.43
5. Step 5: Solve for x
   x = 65,645,072.43/9,304.31
6. Step 6: Final answer
   x = 7,055.34