Finding the Fourth Proportional to 11,009.57, 16,513.79 and 3,613.06

Step by Step Solution

1. Step 1: Write the proportion equation
   11,009.57 : 16,513.79 = 3,613.06 : x
2. Step 2: Convert to fraction form
   11,009.57/16,513.79 = 3,613.06/x
3. Step 3: Cross multiply
   11,009.57x = 16,513.79 × 3,613.06
4. Step 4: Simplify right side
   11,009.57x = 59,665,254.75
5. Step 5: Solve for x
   x = 59,665,254.75/11,009.57
6. Step 6: Final answer
   x = 5,419.40