Finding the Fourth Proportional to 3,396.72, 5,064.92 and 3,390.48

Step by Step Solution

1. Step 1: Write the proportion equation
   3,396.72 : 5,064.92 = 3,390.48 : x
2. Step 2: Convert to fraction form
   3,396.72/5,064.92 = 3,390.48/x
3. Step 3: Cross multiply
   3,396.72x = 5,064.92 × 3,390.48
4. Step 4: Simplify right side
   3,396.72x = 17,172,509.96
5. Step 5: Solve for x
   x = 17,172,509.96/3,396.72
6. Step 6: Final answer
   x = 5,055.62