Finding the Fourth Proportional to 11,805.50, 16,291.60 and 7,089.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,805.50 : 16,291.60 = 7,089.82 : x
2. Step 2: Convert to fraction form
   11,805.50/16,291.60 = 7,089.82/x
3. Step 3: Cross multiply
   11,805.50x = 16,291.60 × 7,089.82
4. Step 4: Simplify right side
   11,805.50x = 115,504,511.51
5. Step 5: Solve for x
   x = 115,504,511.51/11,805.50
6. Step 6: Final answer
   x = 9,783.96