Finding the Fourth Proportional to 16,246.78, 22,420.61 and 9,173.05

Step by Step Solution

1. Step 1: Write the proportion equation
   16,246.78 : 22,420.61 = 9,173.05 : x
2. Step 2: Convert to fraction form
   16,246.78/22,420.61 = 9,173.05/x
3. Step 3: Cross multiply
   16,246.78x = 22,420.61 × 9,173.05
4. Step 4: Simplify right side
   16,246.78x = 205,665,376.56
5. Step 5: Solve for x
   x = 205,665,376.56/16,246.78
6. Step 6: Final answer
   x = 12,658.84