Finding the Fourth Proportional to 11,642.94, 16,067.97 and 7,671.51

Step by Step Solution

1. Step 1: Write the proportion equation
   11,642.94 : 16,067.97 = 7,671.51 : x
2. Step 2: Convert to fraction form
   11,642.94/16,067.97 = 7,671.51/x
3. Step 3: Cross multiply
   11,642.94x = 16,067.97 × 7,671.51
4. Step 4: Simplify right side
   11,642.94x = 123,265,592.53
5. Step 5: Solve for x
   x = 123,265,592.53/11,642.94
6. Step 6: Final answer
   x = 10,587.15