Finding the Fourth Proportional to 3,452.64, 5,145.65 and 3,447.15

Step by Step Solution

1. Step 1: Write the proportion equation
   3,452.64 : 5,145.65 = 3,447.15 : x
2. Step 2: Convert to fraction form
   3,452.64/5,145.65 = 3,447.15/x
3. Step 3: Cross multiply
   3,452.64x = 5,145.65 × 3,447.15
4. Step 4: Simplify right side
   3,452.64x = 17,737,810.16
5. Step 5: Solve for x
   x = 17,737,810.16/3,452.64
6. Step 6: Final answer
   x = 5,137.46