Finding the Fourth Proportional to 3,725.86, 5,137.41 and 3,400.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,725.86 : 5,137.41 = 3,400.42 : x
2. Step 2: Convert to fraction form
   3,725.86/5,137.41 = 3,400.42/x
3. Step 3: Cross multiply
   3,725.86x = 5,137.41 × 3,400.42
4. Step 4: Simplify right side
   3,725.86x = 17,469,351.71
5. Step 5: Solve for x
   x = 17,469,351.71/3,725.86
6. Step 6: Final answer
   x = 4,688.68