Finding the Fourth Proportional to 3,860.53, 5,336.27 and 3,554.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,860.53 : 5,336.27 = 3,554.35 : x
2. Step 2: Convert to fraction form
   3,860.53/5,336.27 = 3,554.35/x
3. Step 3: Cross multiply
   3,860.53x = 5,336.27 × 3,554.35
4. Step 4: Simplify right side
   3,860.53x = 18,966,971.27
5. Step 5: Solve for x
   x = 18,966,971.27/3,860.53
6. Step 6: Final answer
   x = 4,913.05