Finding the Fourth Proportional to 16,671.27, 23,005.41 and 9,116.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,671.27 : 23,005.41 = 9,116.10 : x
2. Step 2: Convert to fraction form
   16,671.27/23,005.41 = 9,116.10/x
3. Step 3: Cross multiply
   16,671.27x = 23,005.41 × 9,116.10
4. Step 4: Simplify right side
   16,671.27x = 209,719,618.10
5. Step 5: Solve for x
   x = 209,719,618.10/16,671.27
6. Step 6: Final answer
   x = 12,579.70