Finding the Fourth Proportional to 3,855.54, 5,755.92 and 3,718.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,855.54 : 5,755.92 = 3,718.86 : x
2. Step 2: Convert to fraction form
   3,855.54/5,755.92 = 3,718.86/x
3. Step 3: Cross multiply
   3,855.54x = 5,755.92 × 3,718.86
4. Step 4: Simplify right side
   3,855.54x = 21,405,453.01
5. Step 5: Solve for x
   x = 21,405,453.01/3,855.54
6. Step 6: Final answer
   x = 5,551.86