Finding the Fourth Proportional to 16,638.41, 22,952.71 and 9,919.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,638.41 : 22,952.71 = 9,919.30 : x
2. Step 2: Convert to fraction form
   16,638.41/22,952.71 = 9,919.30/x
3. Step 3: Cross multiply
   16,638.41x = 22,952.71 × 9,919.30
4. Step 4: Simplify right side
   16,638.41x = 227,674,816.30
5. Step 5: Solve for x
   x = 227,674,816.30/16,638.41
6. Step 6: Final answer
   x = 13,683.69