Finding the Fourth Proportional to 12,871, 19,290.18 and 5,466.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,871 : 19,290.18 = 5,466.76 : x
2. Step 2: Convert to fraction form
   12,871/19,290.18 = 5,466.76/x
3. Step 3: Cross multiply
   12,871x = 19,290.18 × 5,466.76
4. Step 4: Simplify right side
   12,871x = 105,454,784.42
5. Step 5: Solve for x
   x = 105,454,784.42/12,871
6. Step 6: Final answer
   x = 8,193.21