Finding the Fourth Proportional to 16,823.89, 23,216.86 and 9,270.05

Step by Step Solution

1. Step 1: Write the proportion equation
   16,823.89 : 23,216.86 = 9,270.05 : x
2. Step 2: Convert to fraction form
   16,823.89/23,216.86 = 9,270.05/x
3. Step 3: Cross multiply
   16,823.89x = 23,216.86 × 9,270.05
4. Step 4: Simplify right side
   16,823.89x = 215,221,453.04
5. Step 5: Solve for x
   x = 215,221,453.04/16,823.89
6. Step 6: Final answer
   x = 12,792.61