Finding the Fourth Proportional to 16,090.86, 22,206.82 and 9,018.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,090.86 : 22,206.82 = 9,018.78 : x
2. Step 2: Convert to fraction form
   16,090.86/22,206.82 = 9,018.78/x
3. Step 3: Cross multiply
   16,090.86x = 22,206.82 × 9,018.78
4. Step 4: Simplify right side
   16,090.86x = 200,278,424.08
5. Step 5: Solve for x
   x = 200,278,424.08/16,090.86
6. Step 6: Final answer
   x = 12,446.72