Finding the Fourth Proportional to 3,907.56, 5,390.91 and 2,336.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,907.56 : 5,390.91 = 2,336.16 : x
2. Step 2: Convert to fraction form
   3,907.56/5,390.91 = 2,336.16/x
3. Step 3: Cross multiply
   3,907.56x = 5,390.91 × 2,336.16
4. Step 4: Simplify right side
   3,907.56x = 12,594,028.31
5. Step 5: Solve for x
   x = 12,594,028.31/3,907.56
6. Step 6: Final answer
   x = 3,222.99