Finding the Fourth Proportional to 16,109.69, 22,221.15 and 11,640.02

Step by Step Solution

1. Step 1: Write the proportion equation
   16,109.69 : 22,221.15 = 11,640.02 : x
2. Step 2: Convert to fraction form
   16,109.69/22,221.15 = 11,640.02/x
3. Step 3: Cross multiply
   16,109.69x = 22,221.15 × 11,640.02
4. Step 4: Simplify right side
   16,109.69x = 258,654,519.32
5. Step 5: Solve for x
   x = 258,654,519.32/16,109.69
6. Step 6: Final answer
   x = 16,055.84