Finding the Fourth Proportional to 9,231.69, 12,738.04 and 5,455.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,231.69 : 12,738.04 = 5,455.47 : x
2. Step 2: Convert to fraction form
   9,231.69/12,738.04 = 5,455.47/x
3. Step 3: Cross multiply
   9,231.69x = 12,738.04 × 5,455.47
4. Step 4: Simplify right side
   9,231.69x = 69,491,995.08
5. Step 5: Solve for x
   x = 69,491,995.08/9,231.69
6. Step 6: Final answer
   x = 7,527.55