Finding the Fourth Proportional to 3,521.16, 4,859.72 and 2,196.28

Step by Step Solution

1. Step 1: Write the proportion equation
   3,521.16 : 4,859.72 = 2,196.28 : x
2. Step 2: Convert to fraction form
   3,521.16/4,859.72 = 2,196.28/x
3. Step 3: Cross multiply
   3,521.16x = 4,859.72 × 2,196.28
4. Step 4: Simplify right side
   3,521.16x = 10,673,305.84
5. Step 5: Solve for x
   x = 10,673,305.84/3,521.16
6. Step 6: Final answer
   x = 3,031.19