Finding the Fourth Proportional to 11,008.72, 16,513.61 and 3,513.08

Step by Step Solution

1. Step 1: Write the proportion equation
   11,008.72 : 16,513.61 = 3,513.08 : x
2. Step 2: Convert to fraction form
   11,008.72/16,513.61 = 3,513.08/x
3. Step 3: Cross multiply
   11,008.72x = 16,513.61 × 3,513.08
4. Step 4: Simplify right side
   11,008.72x = 58,013,656.74
5. Step 5: Solve for x
   x = 58,013,656.74/11,008.72
6. Step 6: Final answer
   x = 5,269.79