Finding the Fourth Proportional to 11,346.72, 15,659.40 and 7,944.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,346.72 : 15,659.40 = 7,944.10 : x
2. Step 2: Convert to fraction form
   11,346.72/15,659.40 = 7,944.10/x
3. Step 3: Cross multiply
   11,346.72x = 15,659.40 × 7,944.10
4. Step 4: Simplify right side
   11,346.72x = 124,399,839.54
5. Step 5: Solve for x
   x = 124,399,839.54/11,346.72
6. Step 6: Final answer
   x = 10,963.51