Finding the Fourth Proportional to 11,922.78, 16,453.62 and 6,617.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,922.78 : 16,453.62 = 6,617.82 : x
2. Step 2: Convert to fraction form
   11,922.78/16,453.62 = 6,617.82/x
3. Step 3: Cross multiply
   11,922.78x = 16,453.62 × 6,617.82
4. Step 4: Simplify right side
   11,922.78x = 108,887,095.51
5. Step 5: Solve for x
   x = 108,887,095.51/11,922.78
6. Step 6: Final answer
   x = 9,132.69