Finding the Fourth Proportional to 3,978.24, 5,494.40 and 3,952.64

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.24 : 5,494.40 = 3,952.64 : x
2. Step 2: Convert to fraction form
   3,978.24/5,494.40 = 3,952.64/x
3. Step 3: Cross multiply
   3,978.24x = 5,494.40 × 3,952.64
4. Step 4: Simplify right side
   3,978.24x = 21,717,385.22
5. Step 5: Solve for x
   x = 21,717,385.22/3,978.24
6. Step 6: Final answer
   x = 5,459.04