Finding the Fourth Proportional to 9,956.48, 13,739.94 and 5,480.39

Step by Step Solution

1. Step 1: Write the proportion equation
   9,956.48 : 13,739.94 = 5,480.39 : x
2. Step 2: Convert to fraction form
   9,956.48/13,739.94 = 5,480.39/x
3. Step 3: Cross multiply
   9,956.48x = 13,739.94 × 5,480.39
4. Step 4: Simplify right side
   9,956.48x = 75,300,264.13
5. Step 5: Solve for x
   x = 75,300,264.13/9,956.48
6. Step 6: Final answer
   x = 7,562.94