Finding the Fourth Proportional to 11,039.76, 15,237.72 and 7,683.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,039.76 : 15,237.72 = 7,683.12 : x
2. Step 2: Convert to fraction form
   11,039.76/15,237.72 = 7,683.12/x
3. Step 3: Cross multiply
   11,039.76x = 15,237.72 × 7,683.12
4. Step 4: Simplify right side
   11,039.76x = 117,073,231.29
5. Step 5: Solve for x
   x = 117,073,231.29/11,039.76
6. Step 6: Final answer
   x = 10,604.69