Finding the Fourth Proportional to 9,185.99, 12,676.61 and 5,409.11

Step by Step Solution

1. Step 1: Write the proportion equation
   9,185.99 : 12,676.61 = 5,409.11 : x
2. Step 2: Convert to fraction form
   9,185.99/12,676.61 = 5,409.11/x
3. Step 3: Cross multiply
   9,185.99x = 12,676.61 × 5,409.11
4. Step 4: Simplify right side
   9,185.99x = 68,569,087.49
5. Step 5: Solve for x
   x = 68,569,087.49/9,185.99
6. Step 6: Final answer
   x = 7,464.53