Finding the Fourth Proportional to 9,596.31, 13,243.15 and 5,289.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,596.31 : 13,243.15 = 5,289.57 : x
2. Step 2: Convert to fraction form
   9,596.31/13,243.15 = 5,289.57/x
3. Step 3: Cross multiply
   9,596.31x = 13,243.15 × 5,289.57
4. Step 4: Simplify right side
   9,596.31x = 70,050,575.56
5. Step 5: Solve for x
   x = 70,050,575.56/9,596.31
6. Step 6: Final answer
   x = 7,299.74