Finding the Fourth Proportional to 11,669.11, 16,098.78 and 7,185.08

Step by Step Solution

1. Step 1: Write the proportion equation
   11,669.11 : 16,098.78 = 7,185.08 : x
2. Step 2: Convert to fraction form
   11,669.11/16,098.78 = 7,185.08/x
3. Step 3: Cross multiply
   11,669.11x = 16,098.78 × 7,185.08
4. Step 4: Simplify right side
   11,669.11x = 115,671,089.39
5. Step 5: Solve for x
   x = 115,671,089.39/11,669.11
6. Step 6: Final answer
   x = 9,912.59