Finding the Fourth Proportional to 9,036.84, 12,464.56 and 7,689

Step by Step Solution

1. Step 1: Write the proportion equation
   9,036.84 : 12,464.56 = 7,689 : x
2. Step 2: Convert to fraction form
   9,036.84/12,464.56 = 7,689/x
3. Step 3: Cross multiply
   9,036.84x = 12,464.56 × 7,689
4. Step 4: Simplify right side
   9,036.84x = 95,840,001.84
5. Step 5: Solve for x
   x = 95,840,001.84/9,036.84
6. Step 6: Final answer
   x = 10,605.48