Finding the Fourth Proportional to 3,922.21, 5,890.61 and 3,596.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,922.21 : 5,890.61 = 3,596.59 : x
2. Step 2: Convert to fraction form
   3,922.21/5,890.61 = 3,596.59/x
3. Step 3: Cross multiply
   3,922.21x = 5,890.61 × 3,596.59
4. Step 4: Simplify right side
   3,922.21x = 21,186,109.02
5. Step 5: Solve for x
   x = 21,186,109.02/3,922.21
6. Step 6: Final answer
   x = 5,401.57