Finding the Fourth Proportional to 16,236.72, 22,404.88 and 9,161.84

Step by Step Solution

1. Step 1: Write the proportion equation
   16,236.72 : 22,404.88 = 9,161.84 : x
2. Step 2: Convert to fraction form
   16,236.72/22,404.88 = 9,161.84/x
3. Step 3: Cross multiply
   16,236.72x = 22,404.88 × 9,161.84
4. Step 4: Simplify right side
   16,236.72x = 205,269,925.78
5. Step 5: Solve for x
   x = 205,269,925.78/16,236.72
6. Step 6: Final answer
   x = 12,642.33