Finding the Fourth Proportional to 16,439.13, 22,684.86 and 9,269.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,439.13 : 22,684.86 = 9,269.30 : x
2. Step 2: Convert to fraction form
   16,439.13/22,684.86 = 9,269.30/x
3. Step 3: Cross multiply
   16,439.13x = 22,684.86 × 9,269.30
4. Step 4: Simplify right side
   16,439.13x = 210,272,772.80
5. Step 5: Solve for x
   x = 210,272,772.80/16,439.13
6. Step 6: Final answer
   x = 12,790.99