Finding the Fourth Proportional to 3,878.83, 5,356.57 and 3,316.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,878.83 : 5,356.57 = 3,316.03 : x
2. Step 2: Convert to fraction form
   3,878.83/5,356.57 = 3,316.03/x
3. Step 3: Cross multiply
   3,878.83x = 5,356.57 × 3,316.03
4. Step 4: Simplify right side
   3,878.83x = 17,762,546.82
5. Step 5: Solve for x
   x = 17,762,546.82/3,878.83
6. Step 6: Final answer
   x = 4,579.36