Finding the Fourth Proportional to 12,761.17, 19,140.72 and 8,067.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,761.17 : 19,140.72 = 8,067.49 : x
2. Step 2: Convert to fraction form
   12,761.17/19,140.72 = 8,067.49/x
3. Step 3: Cross multiply
   12,761.17x = 19,140.72 × 8,067.49
4. Step 4: Simplify right side
   12,761.17x = 154,417,567.19
5. Step 5: Solve for x
   x = 154,417,567.19/12,761.17
6. Step 6: Final answer
   x = 12,100.58