Finding the Fourth Proportional to 16,191, 22,344.50 and 9,117.89

Step by Step Solution

1. Step 1: Write the proportion equation
   16,191 : 22,344.50 = 9,117.89 : x
2. Step 2: Convert to fraction form
   16,191/22,344.50 = 9,117.89/x
3. Step 3: Cross multiply
   16,191x = 22,344.50 × 9,117.89
4. Step 4: Simplify right side
   16,191x = 203,734,535.79
5. Step 5: Solve for x
   x = 203,734,535.79/16,191
6. Step 6: Final answer
   x = 12,583.20