Finding the Fourth Proportional to 9,789.96, 13,510.20 and 5,313.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,789.96 : 13,510.20 = 5,313.72 : x
2. Step 2: Convert to fraction form
   9,789.96/13,510.20 = 5,313.72/x
3. Step 3: Cross multiply
   9,789.96x = 13,510.20 × 5,313.72
4. Step 4: Simplify right side
   9,789.96x = 71,789,419.94
5. Step 5: Solve for x
   x = 71,789,419.94/9,789.96
6. Step 6: Final answer
   x = 7,332.96