Finding the Fourth Proportional to 3,845.72, 5,772.50 and 3,409.68

Step by Step Solution

1. Step 1: Write the proportion equation
   3,845.72 : 5,772.50 = 3,409.68 : x
2. Step 2: Convert to fraction form
   3,845.72/5,772.50 = 3,409.68/x
3. Step 3: Cross multiply
   3,845.72x = 5,772.50 × 3,409.68
4. Step 4: Simplify right side
   3,845.72x = 19,682,377.80
5. Step 5: Solve for x
   x = 19,682,377.80/3,845.72
6. Step 6: Final answer
   x = 5,118.00