Finding the Fourth Proportional to 16,870.89, 23,281.68 and 9,317.73

Step by Step Solution

1. Step 1: Write the proportion equation
   16,870.89 : 23,281.68 = 9,317.73 : x
2. Step 2: Convert to fraction form
   16,870.89/23,281.68 = 9,317.73/x
3. Step 3: Cross multiply
   16,870.89x = 23,281.68 × 9,317.73
4. Step 4: Simplify right side
   16,870.89x = 216,932,408.19
5. Step 5: Solve for x
   x = 216,932,408.19/16,870.89
6. Step 6: Final answer
   x = 12,858.39