Finding the Fourth Proportional to 16,871.01, 23,280.83 and 9,317.28

Step by Step Solution

1. Step 1: Write the proportion equation
   16,871.01 : 23,280.83 = 9,317.28 : x
2. Step 2: Convert to fraction form
   16,871.01/23,280.83 = 9,317.28/x
3. Step 3: Cross multiply
   16,871.01x = 23,280.83 × 9,317.28
4. Step 4: Simplify right side
   16,871.01x = 216,913,877.85
5. Step 5: Solve for x
   x = 216,913,877.85/16,871.01
6. Step 6: Final answer
   x = 12,857.19