Finding the Fourth Proportional to 3,964.68, 5,930.60 and 3,603.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,964.68 : 5,930.60 = 3,603.83 : x
2. Step 2: Convert to fraction form
   3,964.68/5,930.60 = 3,603.83/x
3. Step 3: Cross multiply
   3,964.68x = 5,930.60 × 3,603.83
4. Step 4: Simplify right side
   3,964.68x = 21,372,826.53
5. Step 5: Solve for x
   x = 21,372,826.53/3,964.68
6. Step 6: Final answer
   x = 5,390.81