Finding the Fourth Proportional to 3,869.98, 5,339.70 and 2,613.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,869.98 : 5,339.70 = 2,613.34 : x
2. Step 2: Convert to fraction form
   3,869.98/5,339.70 = 2,613.34/x
3. Step 3: Cross multiply
   3,869.98x = 5,339.70 × 2,613.34
4. Step 4: Simplify right side
   3,869.98x = 13,954,451.60
5. Step 5: Solve for x
   x = 13,954,451.60/3,869.98
6. Step 6: Final answer
   x = 3,605.82