Finding the Fourth Proportional to 3,823.09, 5,272.82 and 3,158.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,823.09 : 5,272.82 = 3,158.78 : x
2. Step 2: Convert to fraction form
   3,823.09/5,272.82 = 3,158.78/x
3. Step 3: Cross multiply
   3,823.09x = 5,272.82 × 3,158.78
4. Step 4: Simplify right side
   3,823.09x = 16,655,688.85
5. Step 5: Solve for x
   x = 16,655,688.85/3,823.09
6. Step 6: Final answer
   x = 4,356.61