Finding the Fourth Proportional to 16,243.56, 22,415.82 and 9,170.76

Step by Step Solution

1. Step 1: Write the proportion equation
   16,243.56 : 22,415.82 = 9,170.76 : x
2. Step 2: Convert to fraction form
   16,243.56/22,415.82 = 9,170.76/x
3. Step 3: Cross multiply
   16,243.56x = 22,415.82 × 9,170.76
4. Step 4: Simplify right side
   16,243.56x = 205,570,105.42
5. Step 5: Solve for x
   x = 205,570,105.42/16,243.56
6. Step 6: Final answer
   x = 12,655.48