Finding the Fourth Proportional to 16,115.82, 22,240.23 and 9,042.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,115.82 : 22,240.23 = 9,042.78 : x
2. Step 2: Convert to fraction form
   16,115.82/22,240.23 = 9,042.78/x
3. Step 3: Cross multiply
   16,115.82x = 22,240.23 × 9,042.78
4. Step 4: Simplify right side
   16,115.82x = 201,113,507.04
5. Step 5: Solve for x
   x = 201,113,507.04/16,115.82
6. Step 6: Final answer
   x = 12,479.26