Finding the Fourth Proportional to 3,902.74, 5,825.81 and 3,613.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,902.74 : 5,825.81 = 3,613.69 : x
2. Step 2: Convert to fraction form
   3,902.74/5,825.81 = 3,613.69/x
3. Step 3: Cross multiply
   3,902.74x = 5,825.81 × 3,613.69
4. Step 4: Simplify right side
   3,902.74x = 21,052,671.34
5. Step 5: Solve for x
   x = 21,052,671.34/3,902.74
6. Step 6: Final answer
   x = 5,394.33