Finding the Fourth Proportional to 3,941.78, 5,427.77 and 3,516.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,941.78 : 5,427.77 = 3,516.35 : x
2. Step 2: Convert to fraction form
   3,941.78/5,427.77 = 3,516.35/x
3. Step 3: Cross multiply
   3,941.78x = 5,427.77 × 3,516.35
4. Step 4: Simplify right side
   3,941.78x = 19,085,894.32
5. Step 5: Solve for x
   x = 19,085,894.32/3,941.78
6. Step 6: Final answer
   x = 4,841.95