Finding the Fourth Proportional to 3,401.02, 5,099.90 and 2,658.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,401.02 : 5,099.90 = 2,658.76 : x
2. Step 2: Convert to fraction form
   3,401.02/5,099.90 = 2,658.76/x
3. Step 3: Cross multiply
   3,401.02x = 5,099.90 × 2,658.76
4. Step 4: Simplify right side
   3,401.02x = 13,559,384.08
5. Step 5: Solve for x
   x = 13,559,384.08/3,401.02
6. Step 6: Final answer
   x = 3,986.86