Finding the Fourth Proportional to 9,685.50, 13,365.99 and 5,269.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,685.50 : 13,365.99 = 5,269.50 : x
2. Step 2: Convert to fraction form
   9,685.50/13,365.99 = 5,269.50/x
3. Step 3: Cross multiply
   9,685.50x = 13,365.99 × 5,269.50
4. Step 4: Simplify right side
   9,685.50x = 70,432,084.31
5. Step 5: Solve for x
   x = 70,432,084.31/9,685.50
6. Step 6: Final answer
   x = 7,271.91