Finding the Fourth Proportional to 12,917.69, 17,821.83 and 8,444.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,917.69 : 17,821.83 = 8,444.04 : x
2. Step 2: Convert to fraction form
   12,917.69/17,821.83 = 8,444.04/x
3. Step 3: Cross multiply
   12,917.69x = 17,821.83 × 8,444.04
4. Step 4: Simplify right side
   12,917.69x = 150,488,245.39
5. Step 5: Solve for x
   x = 150,488,245.39/12,917.69
6. Step 6: Final answer
   x = 11,649.78