Finding the Fourth Proportional to 16,164.78, 22,307.31 and 9,091.05

Step by Step Solution

1. Step 1: Write the proportion equation
   16,164.78 : 22,307.31 = 9,091.05 : x
2. Step 2: Convert to fraction form
   16,164.78/22,307.31 = 9,091.05/x
3. Step 3: Cross multiply
   16,164.78x = 22,307.31 × 9,091.05
4. Step 4: Simplify right side
   16,164.78x = 202,796,870.58
5. Step 5: Solve for x
   x = 202,796,870.58/16,164.78
6. Step 6: Final answer
   x = 12,545.60