Finding the Fourth Proportional to 12,679.16, 19,016.52 and 3,443

Step by Step Solution

1. Step 1: Write the proportion equation
   12,679.16 : 19,016.52 = 3,443 : x
2. Step 2: Convert to fraction form
   12,679.16/19,016.52 = 3,443/x
3. Step 3: Cross multiply
   12,679.16x = 19,016.52 × 3,443
4. Step 4: Simplify right side
   12,679.16x = 65,473,878.36
5. Step 5: Solve for x
   x = 65,473,878.36/12,679.16
6. Step 6: Final answer
   x = 5,163.90