Finding the Fourth Proportional to 11,013.27, 16,513.71 and 3,615.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,013.27 : 16,513.71 = 3,615.72 : x
2. Step 2: Convert to fraction form
   11,013.27/16,513.71 = 3,615.72/x
3. Step 3: Cross multiply
   11,013.27x = 16,513.71 × 3,615.72
4. Step 4: Simplify right side
   11,013.27x = 59,708,951.52
5. Step 5: Solve for x
   x = 59,708,951.52/11,013.27
6. Step 6: Final answer
   x = 5,421.55