Finding the Fourth Proportional to 8,111.09, 12,166.61 and 1,955.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.09 : 12,166.61 = 1,955.09 : x
2. Step 2: Convert to fraction form
   8,111.09/12,166.61 = 1,955.09/x
3. Step 3: Cross multiply
   8,111.09x = 12,166.61 × 1,955.09
4. Step 4: Simplify right side
   8,111.09x = 23,786,746.94
5. Step 5: Solve for x
   x = 23,786,746.94/8,111.09
6. Step 6: Final answer
   x = 2,932.62