Finding the Fourth Proportional to 12,871, 17,761.86 and 7,282

Step by Step Solution

1. Step 1: Write the proportion equation
   12,871 : 17,761.86 = 7,282 : x
2. Step 2: Convert to fraction form
   12,871/17,761.86 = 7,282/x
3. Step 3: Cross multiply
   12,871x = 17,761.86 × 7,282
4. Step 4: Simplify right side
   12,871x = 129,341,864.52
5. Step 5: Solve for x
   x = 129,341,864.52/12,871
6. Step 6: Final answer
   x = 10,049.09