Finding the Fourth Proportional to 12,982.71, 17,917.88 and 7,318.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,982.71 : 17,917.88 = 7,318.69 : x
2. Step 2: Convert to fraction form
   12,982.71/17,917.88 = 7,318.69/x
3. Step 3: Cross multiply
   12,982.71x = 17,917.88 × 7,318.69
4. Step 4: Simplify right side
   12,982.71x = 131,135,327.79
5. Step 5: Solve for x
   x = 131,135,327.79/12,982.71
6. Step 6: Final answer
   x = 10,100.76