Finding the Fourth Proportional to 9,955.43, 13,739.33 and 5,480.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,955.43 : 13,739.33 = 5,480.03 : x
2. Step 2: Convert to fraction form
   9,955.43/13,739.33 = 5,480.03/x
3. Step 3: Cross multiply
   9,955.43x = 13,739.33 × 5,480.03
4. Step 4: Simplify right side
   9,955.43x = 75,291,940.58
5. Step 5: Solve for x
   x = 75,291,940.58/9,955.43
6. Step 6: Final answer
   x = 7,562.90