Finding the Fourth Proportional to 3,196.72, 4,792.68 and 2,153.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,196.72 : 4,792.68 = 2,153.78 : x
2. Step 2: Convert to fraction form
   3,196.72/4,792.68 = 2,153.78/x
3. Step 3: Cross multiply
   3,196.72x = 4,792.68 × 2,153.78
4. Step 4: Simplify right side
   3,196.72x = 10,322,378.33
5. Step 5: Solve for x
   x = 10,322,378.33/3,196.72
6. Step 6: Final answer
   x = 3,229.05