Finding the Fourth Proportional to 9,112.16, 12,576.12 and 5,574.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,112.16 : 12,576.12 = 5,574.80 : x
2. Step 2: Convert to fraction form
   9,112.16/12,576.12 = 5,574.80/x
3. Step 3: Cross multiply
   9,112.16x = 12,576.12 × 5,574.80
4. Step 4: Simplify right side
   9,112.16x = 70,109,353.78
5. Step 5: Solve for x
   x = 70,109,353.78/9,112.16
6. Step 6: Final answer
   x = 7,694.04