Finding the Fourth Proportional to 3,969.15, 5,480.10 and 3,548.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,969.15 : 5,480.10 = 3,548.16 : x
2. Step 2: Convert to fraction form
   3,969.15/5,480.10 = 3,548.16/x
3. Step 3: Cross multiply
   3,969.15x = 5,480.10 × 3,548.16
4. Step 4: Simplify right side
   3,969.15x = 19,444,271.62
5. Step 5: Solve for x
   x = 19,444,271.62/3,969.15
6. Step 6: Final answer
   x = 4,898.85