Finding the Fourth Proportional to 3,883.89, 5,360.94 and 3,685.49

Step by Step Solution

1. Step 1: Write the proportion equation
   3,883.89 : 5,360.94 = 3,685.49 : x
2. Step 2: Convert to fraction form
   3,883.89/5,360.94 = 3,685.49/x
3. Step 3: Cross multiply
   3,883.89x = 5,360.94 × 3,685.49
4. Step 4: Simplify right side
   3,883.89x = 19,757,663.96
5. Step 5: Solve for x
   x = 19,757,663.96/3,883.89
6. Step 6: Final answer
   x = 5,087.08