Finding the Fourth Proportional to 9,119.43, 12,576.42 and 5,756.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,119.43 : 12,576.42 = 5,756.43 : x
2. Step 2: Convert to fraction form
   9,119.43/12,576.42 = 5,756.43/x
3. Step 3: Cross multiply
   9,119.43x = 12,576.42 × 5,756.43
4. Step 4: Simplify right side
   9,119.43x = 72,395,281.38
5. Step 5: Solve for x
   x = 72,395,281.38/9,119.43
6. Step 6: Final answer
   x = 7,938.58