Finding the Fourth Proportional to 11,078.12, 16,613.60 and 3,680.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,078.12 : 16,613.60 = 3,680.59 : x
2. Step 2: Convert to fraction form
   11,078.12/16,613.60 = 3,680.59/x
3. Step 3: Cross multiply
   11,078.12x = 16,613.60 × 3,680.59
4. Step 4: Simplify right side
   11,078.12x = 61,147,850.02
5. Step 5: Solve for x
   x = 61,147,850.02/11,078.12
6. Step 6: Final answer
   x = 5,519.70