Finding the Fourth Proportional to 16,174.89, 22,175.78 and 15,879.65

Step by Step Solution

1. Step 1: Write the proportion equation
   16,174.89 : 22,175.78 = 15,879.65 : x
2. Step 2: Convert to fraction form
   16,174.89/22,175.78 = 15,879.65/x
3. Step 3: Cross multiply
   16,174.89x = 22,175.78 × 15,879.65
4. Step 4: Simplify right side
   16,174.89x = 352,143,434.60
5. Step 5: Solve for x
   x = 352,143,434.60/16,174.89
6. Step 6: Final answer
   x = 21,770.99