Finding the Fourth Proportional to 12,917.82, 17,808.17 and 9,508.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,917.82 : 17,808.17 = 9,508.84 : x
2. Step 2: Convert to fraction form
   12,917.82/17,808.17 = 9,508.84/x
3. Step 3: Cross multiply
   12,917.82x = 17,808.17 × 9,508.84
4. Step 4: Simplify right side
   12,917.82x = 169,335,018.47
5. Step 5: Solve for x
   x = 169,335,018.47/12,917.82
6. Step 6: Final answer
   x = 13,108.64