Finding the Fourth Proportional to 11,078.15, 16,613.64 and 3,680.63

Step by Step Solution

1. Step 1: Write the proportion equation
   11,078.15 : 16,613.64 = 3,680.63 : x
2. Step 2: Convert to fraction form
   11,078.15/16,613.64 = 3,680.63/x
3. Step 3: Cross multiply
   11,078.15x = 16,613.64 × 3,680.63
4. Step 4: Simplify right side
   11,078.15x = 61,148,578.73
5. Step 5: Solve for x
   x = 61,148,578.73/11,078.15
6. Step 6: Final answer
   x = 5,519.75