Finding the Fourth Proportional to 11,020.23, 15,200.39 and 7,039.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,020.23 : 15,200.39 = 7,039.56 : x
2. Step 2: Convert to fraction form
   11,020.23/15,200.39 = 7,039.56/x
3. Step 3: Cross multiply
   11,020.23x = 15,200.39 × 7,039.56
4. Step 4: Simplify right side
   11,020.23x = 107,004,022.23
5. Step 5: Solve for x
   x = 107,004,022.23/11,020.23
6. Step 6: Final answer
   x = 9,709.78