Finding the Fourth Proportional to 3,928.89, 5,894.16 and 3,536.79

Step by Step Solution

1. Step 1: Write the proportion equation
   3,928.89 : 5,894.16 = 3,536.79 : x
2. Step 2: Convert to fraction form
   3,928.89/5,894.16 = 3,536.79/x
3. Step 3: Cross multiply
   3,928.89x = 5,894.16 × 3,536.79
4. Step 4: Simplify right side
   3,928.89x = 20,846,406.15
5. Step 5: Solve for x
   x = 20,846,406.15/3,928.89
6. Step 6: Final answer
   x = 5,305.93