Finding the Fourth Proportional to 3,613.05, 5,395.85 and 3,115.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,613.05 : 5,395.85 = 3,115.52 : x
2. Step 2: Convert to fraction form
   3,613.05/5,395.85 = 3,115.52/x
3. Step 3: Cross multiply
   3,613.05x = 5,395.85 × 3,115.52
4. Step 4: Simplify right side
   3,613.05x = 16,810,878.59
5. Step 5: Solve for x
   x = 16,810,878.59/3,613.05
6. Step 6: Final answer
   x = 4,652.82