Finding the Fourth Proportional to 16,863.91, 23,272.28 and 9,310.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,863.91 : 23,272.28 = 9,310.10 : x
2. Step 2: Convert to fraction form
   16,863.91/23,272.28 = 9,310.10/x
3. Step 3: Cross multiply
   16,863.91x = 23,272.28 × 9,310.10
4. Step 4: Simplify right side
   16,863.91x = 216,667,265.66
5. Step 5: Solve for x
   x = 216,667,265.66/16,863.91
6. Step 6: Final answer
   x = 12,847.99