Finding the Fourth Proportional to 9,470.72, 13,067.87 and 5,491.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,470.72 : 13,067.87 = 5,491.28 : x
2. Step 2: Convert to fraction form
   9,470.72/13,067.87 = 5,491.28/x
3. Step 3: Cross multiply
   9,470.72x = 13,067.87 × 5,491.28
4. Step 4: Simplify right side
   9,470.72x = 71,759,240.38
5. Step 5: Solve for x
   x = 71,759,240.38/9,470.72
6. Step 6: Final answer
   x = 7,576.96