Finding the Fourth Proportional to 3,940.55, 5,893.40 and 3,504.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940.55 : 5,893.40 = 3,504.86 : x
2. Step 2: Convert to fraction form
   3,940.55/5,893.40 = 3,504.86/x
3. Step 3: Cross multiply
   3,940.55x = 5,893.40 × 3,504.86
4. Step 4: Simplify right side
   3,940.55x = 20,655,541.92
5. Step 5: Solve for x
   x = 20,655,541.92/3,940.55
6. Step 6: Final answer
   x = 5,241.79