Finding the Fourth Proportional to 10,944.09, 15,109.07 and 7,228.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,944.09 : 15,109.07 = 7,228.89 : x
2. Step 2: Convert to fraction form
   10,944.09/15,109.07 = 7,228.89/x
3. Step 3: Cross multiply
   10,944.09x = 15,109.07 × 7,228.89
4. Step 4: Simplify right side
   10,944.09x = 109,221,768.89
5. Step 5: Solve for x
   x = 109,221,768.89/10,944.09
6. Step 6: Final answer
   x = 9,979.98