Finding the Fourth Proportional to 16,165.78, 22,308.56 and 9,092.21

Step by Step Solution

1. Step 1: Write the proportion equation
   16,165.78 : 22,308.56 = 9,092.21 : x
2. Step 2: Convert to fraction form
   16,165.78/22,308.56 = 9,092.21/x
3. Step 3: Cross multiply
   16,165.78x = 22,308.56 × 9,092.21
4. Step 4: Simplify right side
   16,165.78x = 202,833,955.31
5. Step 5: Solve for x
   x = 202,833,955.31/16,165.78
6. Step 6: Final answer
   x = 12,547.12