Finding the Fourth Proportional to 16,164.72, 22,307.17 and 9,091.20

Step by Step Solution

1. Step 1: Write the proportion equation
   16,164.72 : 22,307.17 = 9,091.20 : x
2. Step 2: Convert to fraction form
   16,164.72/22,307.17 = 9,091.20/x
3. Step 3: Cross multiply
   16,164.72x = 22,307.17 × 9,091.20
4. Step 4: Simplify right side
   16,164.72x = 202,798,943.90
5. Step 5: Solve for x
   x = 202,798,943.90/16,164.72
6. Step 6: Final answer
   x = 12,545.78