Finding the Fourth Proportional to 5,196.36, 7,171.61 and 3,521.49

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196.36 : 7,171.61 = 3,521.49 : x
2. Step 2: Convert to fraction form
   5,196.36/7,171.61 = 3,521.49/x
3. Step 3: Cross multiply
   5,196.36x = 7,171.61 × 3,521.49
4. Step 4: Simplify right side
   5,196.36x = 25,254,752.90
5. Step 5: Solve for x
   x = 25,254,752.90/5,196.36
6. Step 6: Final answer
   x = 4,860.09