Finding the Fourth Proportional to 3,884.18, 5,361.81 and 3,680.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,884.18 : 5,361.81 = 3,680.60 : x
2. Step 2: Convert to fraction form
   3,884.18/5,361.81 = 3,680.60/x
3. Step 3: Cross multiply
   3,884.18x = 5,361.81 × 3,680.60
4. Step 4: Simplify right side
   3,884.18x = 19,734,677.89
5. Step 5: Solve for x
   x = 19,734,677.89/3,884.18
6. Step 6: Final answer
   x = 5,080.78