Finding the Fourth Proportional to 16,172.72, 22,317.16 and 9,097.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,172.72 : 22,317.16 = 9,097.78 : x
2. Step 2: Convert to fraction form
   16,172.72/22,317.16 = 9,097.78/x
3. Step 3: Cross multiply
   16,172.72x = 22,317.16 × 9,097.78
4. Step 4: Simplify right side
   16,172.72x = 203,036,611.90
5. Step 5: Solve for x
   x = 203,036,611.90/16,172.72
6. Step 6: Final answer
   x = 12,554.26