Finding the Fourth Proportional to 3,936.61, 5,901.38 and 3,594.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,936.61 : 5,901.38 = 3,594.20 : x
2. Step 2: Convert to fraction form
   3,936.61/5,901.38 = 3,594.20/x
3. Step 3: Cross multiply
   3,936.61x = 5,901.38 × 3,594.20
4. Step 4: Simplify right side
   3,936.61x = 21,210,722.03
5. Step 5: Solve for x
   x = 21,210,722.03/3,936.61
6. Step 6: Final answer
   x = 5,388.07