Finding the Fourth Proportional to 16,671.51, 23,007.27 and 9,117.39

Step by Step Solution

1. Step 1: Write the proportion equation
   16,671.51 : 23,007.27 = 9,117.39 : x
2. Step 2: Convert to fraction form
   16,671.51/23,007.27 = 9,117.39/x
3. Step 3: Cross multiply
   16,671.51x = 23,007.27 × 9,117.39
4. Step 4: Simplify right side
   16,671.51x = 209,766,138.39
5. Step 5: Solve for x
   x = 209,766,138.39/16,671.51
6. Step 6: Final answer
   x = 12,582.32