Finding the Fourth Proportional to 3,871.90, 5,799.57 and 3,602.17

Step by Step Solution

1. Step 1: Write the proportion equation
   3,871.90 : 5,799.57 = 3,602.17 : x
2. Step 2: Convert to fraction form
   3,871.90/5,799.57 = 3,602.17/x
3. Step 3: Cross multiply
   3,871.90x = 5,799.57 × 3,602.17
4. Step 4: Simplify right side
   3,871.90x = 20,891,037.07
5. Step 5: Solve for x
   x = 20,891,037.07/3,871.90
6. Step 6: Final answer
   x = 5,395.55