Finding the Fourth Proportional to 3,978.96, 5,491.62 and 3,033.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.96 : 5,491.62 = 3,033.15 : x
2. Step 2: Convert to fraction form
   3,978.96/5,491.62 = 3,033.15/x
3. Step 3: Cross multiply
   3,978.96x = 5,491.62 × 3,033.15
4. Step 4: Simplify right side
   3,978.96x = 16,656,907.20
5. Step 5: Solve for x
   x = 16,656,907.20/3,978.96
6. Step 6: Final answer
   x = 4,186.25