Finding the Fourth Proportional to 9,456.08, 13,048.40 and 5,478.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,456.08 : 13,048.40 = 5,478.48 : x
2. Step 2: Convert to fraction form
   9,456.08/13,048.40 = 5,478.48/x
3. Step 3: Cross multiply
   9,456.08x = 13,048.40 × 5,478.48
4. Step 4: Simplify right side
   9,456.08x = 71,485,398.43
5. Step 5: Solve for x
   x = 71,485,398.43/9,456.08
6. Step 6: Final answer
   x = 7,559.73