Finding the Fourth Proportional to 3,860.77, 5,781.91 and 3,667.02

Step by Step Solution

1. Step 1: Write the proportion equation
   3,860.77 : 5,781.91 = 3,667.02 : x
2. Step 2: Convert to fraction form
   3,860.77/5,781.91 = 3,667.02/x
3. Step 3: Cross multiply
   3,860.77x = 5,781.91 × 3,667.02
4. Step 4: Simplify right side
   3,860.77x = 21,202,379.61
5. Step 5: Solve for x
   x = 21,202,379.61/3,860.77
6. Step 6: Final answer
   x = 5,491.75