Finding the Fourth Proportional to 16,196.74, 22,351.48 and 9,123.21

Step by Step Solution

1. Step 1: Write the proportion equation
   16,196.74 : 22,351.48 = 9,123.21 : x
2. Step 2: Convert to fraction form
   16,196.74/22,351.48 = 9,123.21/x
3. Step 3: Cross multiply
   16,196.74x = 22,351.48 × 9,123.21
4. Step 4: Simplify right side
   16,196.74x = 203,917,223.04
5. Step 5: Solve for x
   x = 203,917,223.04/16,196.74
6. Step 6: Final answer
   x = 12,590.02