Finding the Fourth Proportional to 9,956.99, 13,740.77 and 5,480.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,956.99 : 13,740.77 = 5,480.73 : x
2. Step 2: Convert to fraction form
   9,956.99/13,740.77 = 5,480.73/x
3. Step 3: Cross multiply
   9,956.99x = 13,740.77 × 5,480.73
4. Step 4: Simplify right side
   9,956.99x = 75,309,464.06
5. Step 5: Solve for x
   x = 75,309,464.06/9,956.99
6. Step 6: Final answer
   x = 7,563.48