Finding the Fourth Proportional to 11,005.39, 16,507.98 and 3,609.77

Step by Step Solution

1. Step 1: Write the proportion equation
   11,005.39 : 16,507.98 = 3,609.77 : x
2. Step 2: Convert to fraction form
   11,005.39/16,507.98 = 3,609.77/x
3. Step 3: Cross multiply
   11,005.39x = 16,507.98 × 3,609.77
4. Step 4: Simplify right side
   11,005.39x = 59,589,918.27
5. Step 5: Solve for x
   x = 59,589,918.27/11,005.39
6. Step 6: Final answer
   x = 5,414.61