Finding the Fourth Proportional to 9,960.63, 13,745.77 and 5,484.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,960.63 : 13,745.77 = 5,484.55 : x
2. Step 2: Convert to fraction form
   9,960.63/13,745.77 = 5,484.55/x
3. Step 3: Cross multiply
   9,960.63x = 13,745.77 × 5,484.55
4. Step 4: Simplify right side
   9,960.63x = 75,389,332.79
5. Step 5: Solve for x
   x = 75,389,332.79/9,960.63
6. Step 6: Final answer
   x = 7,568.73