Finding the Fourth Proportional to 10,944.12, 16,404.40 and 5,309.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,944.12 : 16,404.40 = 5,309.86 : x
2. Step 2: Convert to fraction form
   10,944.12/16,404.40 = 5,309.86/x
3. Step 3: Cross multiply
   10,944.12x = 16,404.40 × 5,309.86
4. Step 4: Simplify right side
   10,944.12x = 87,105,067.38
5. Step 5: Solve for x
   x = 87,105,067.38/10,944.12
6. Step 6: Final answer
   x = 7,959.07