Finding the Fourth Proportional to 3,870.07, 5,339.81 and 2,613.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.07 : 5,339.81 = 2,613.46 : x
2. Step 2: Convert to fraction form
   3,870.07/5,339.81 = 2,613.46/x
3. Step 3: Cross multiply
   3,870.07x = 5,339.81 × 2,613.46
4. Step 4: Simplify right side
   3,870.07x = 13,955,379.84
5. Step 5: Solve for x
   x = 13,955,379.84/3,870.07
6. Step 6: Final answer
   x = 3,605.98