Finding the Fourth Proportional to 10,381.50, 15,496.56 and 9,069.30

Step by Step Solution

1. Step 1: Write the proportion equation
   10,381.50 : 15,496.56 = 9,069.30 : x
2. Step 2: Convert to fraction form
   10,381.50/15,496.56 = 9,069.30/x
3. Step 3: Cross multiply
   10,381.50x = 15,496.56 × 9,069.30
4. Step 4: Simplify right side
   10,381.50x = 140,542,951.61
5. Step 5: Solve for x
   x = 140,542,951.61/10,381.50
6. Step 6: Final answer
   x = 13,537.83