Finding the Fourth Proportional to 9,789.69, 13,509.74 and 5,313.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,789.69 : 13,509.74 = 5,313.48 : x
2. Step 2: Convert to fraction form
   9,789.69/13,509.74 = 5,313.48/x
3. Step 3: Cross multiply
   9,789.69x = 13,509.74 × 5,313.48
4. Step 4: Simplify right side
   9,789.69x = 71,783,706.73
5. Step 5: Solve for x
   x = 71,783,706.73/9,789.69
6. Step 6: Final answer
   x = 7,332.58