Finding the Fourth Proportional to 3,816.52, 5,287.24 and 3,725.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,816.52 : 5,287.24 = 3,725.80 : x
2. Step 2: Convert to fraction form
   3,816.52/5,287.24 = 3,725.80/x
3. Step 3: Cross multiply
   3,816.52x = 5,287.24 × 3,725.80
4. Step 4: Simplify right side
   3,816.52x = 19,699,198.79
5. Step 5: Solve for x
   x = 19,699,198.79/3,816.52
6. Step 6: Final answer
   x = 5,161.56