Finding the Fourth Proportional to 11,642.19, 16,067.34 and 7,168.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,642.19 : 16,067.34 = 7,168.56 : x
2. Step 2: Convert to fraction form
   11,642.19/16,067.34 = 7,168.56/x
3. Step 3: Cross multiply
   11,642.19x = 16,067.34 × 7,168.56
4. Step 4: Simplify right side
   11,642.19x = 115,179,690.83
5. Step 5: Solve for x
   x = 115,179,690.83/11,642.19
6. Step 6: Final answer
   x = 9,893.30