Finding the Fourth Proportional to 3,401.93, 5,121.83 and 2,665.58

Step by Step Solution

1. Step 1: Write the proportion equation
   3,401.93 : 5,121.83 = 2,665.58 : x
2. Step 2: Convert to fraction form
   3,401.93/5,121.83 = 2,665.58/x
3. Step 3: Cross multiply
   3,401.93x = 5,121.83 × 2,665.58
4. Step 4: Simplify right side
   3,401.93x = 13,652,628.67
5. Step 5: Solve for x
   x = 13,652,628.67/3,401.93
6. Step 6: Final answer
   x = 4,013.20