Finding the Fourth Proportional to 16,165.36, 22,307.98 and 9,091.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,165.36 : 22,307.98 = 9,091.78 : x
2. Step 2: Convert to fraction form
   16,165.36/22,307.98 = 9,091.78/x
3. Step 3: Cross multiply
   16,165.36x = 22,307.98 × 9,091.78
4. Step 4: Simplify right side
   16,165.36x = 202,819,167.91
5. Step 5: Solve for x
   x = 202,819,167.91/16,165.36
6. Step 6: Final answer
   x = 12,546.53