Finding the Fourth Proportional to 16,873.89, 23,285.86 and 9,320.71

Step by Step Solution

1. Step 1: Write the proportion equation
   16,873.89 : 23,285.86 = 9,320.71 : x
2. Step 2: Convert to fraction form
   16,873.89/23,285.86 = 9,320.71/x
3. Step 3: Cross multiply
   16,873.89x = 23,285.86 × 9,320.71
4. Step 4: Simplify right side
   16,873.89x = 217,040,748.16
5. Step 5: Solve for x
   x = 217,040,748.16/16,873.89
6. Step 6: Final answer
   x = 12,862.52