Finding the Fourth Proportional to 12,166.10, 17,067.10 and 12,166.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,166.10 : 17,067.10 = 12,166.10 : x
2. Step 2: Convert to fraction form
   12,166.10/17,067.10 = 12,166.10/x
3. Step 3: Cross multiply
   12,166.10x = 17,067.10 × 12,166.10
4. Step 4: Simplify right side
   12,166.10x = 207,640,045.31
5. Step 5: Solve for x
   x = 207,640,045.31/12,166.10
6. Step 6: Final answer
   x = 17,067.10