Finding the Fourth Proportional to 16,869.08, 23,279.33 and 9,315.43

Step by Step Solution

1. Step 1: Write the proportion equation
   16,869.08 : 23,279.33 = 9,315.43 : x
2. Step 2: Convert to fraction form
   16,869.08/23,279.33 = 9,315.43/x
3. Step 3: Cross multiply
   16,869.08x = 23,279.33 × 9,315.43
4. Step 4: Simplify right side
   16,869.08x = 216,856,934.15
5. Step 5: Solve for x
   x = 216,856,934.15/16,869.08
6. Step 6: Final answer
   x = 12,855.29