Finding the Fourth Proportional to 3,913.94, 5,840.56 and 3,498.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,913.94 : 5,840.56 = 3,498.50 : x
2. Step 2: Convert to fraction form
   3,913.94/5,840.56 = 3,498.50/x
3. Step 3: Cross multiply
   3,913.94x = 5,840.56 × 3,498.50
4. Step 4: Simplify right side
   3,913.94x = 20,433,199.16
5. Step 5: Solve for x
   x = 20,433,199.16/3,913.94
6. Step 6: Final answer
   x = 5,220.62