Finding the Fourth Proportional to 16,642.72, 22,967.04 and 9,190.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,642.72 : 22,967.04 = 9,190.72 : x
2. Step 2: Convert to fraction form
   16,642.72/22,967.04 = 9,190.72/x
3. Step 3: Cross multiply
   16,642.72x = 22,967.04 × 9,190.72
4. Step 4: Simplify right side
   16,642.72x = 211,083,633.87
5. Step 5: Solve for x
   x = 211,083,633.87/16,642.72
6. Step 6: Final answer
   x = 12,683.24