Finding the Fourth Proportional to 11,106.06, 16,661.71 and 3,609.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,106.06 : 16,661.71 = 3,609.60 : x
2. Step 2: Convert to fraction form
   11,106.06/16,661.71 = 3,609.60/x
3. Step 3: Cross multiply
   11,106.06x = 16,661.71 × 3,609.60
4. Step 4: Simplify right side
   11,106.06x = 60,142,108.42
5. Step 5: Solve for x
   x = 60,142,108.42/11,106.06
6. Step 6: Final answer
   x = 5,415.25