Finding the Fourth Proportional to 9,809.40, 13,536.69 and 5,560.85

Step by Step Solution

1. Step 1: Write the proportion equation
   9,809.40 : 13,536.69 = 5,560.85 : x
2. Step 2: Convert to fraction form
   9,809.40/13,536.69 = 5,560.85/x
3. Step 3: Cross multiply
   9,809.40x = 13,536.69 × 5,560.85
4. Step 4: Simplify right side
   9,809.40x = 75,275,536.43
5. Step 5: Solve for x
   x = 75,275,536.43/9,809.40
6. Step 6: Final answer
   x = 7,673.81