Finding the Fourth Proportional to 8,143.49, 12,215.20 and 3,462.77

Step by Step Solution

1. Step 1: Write the proportion equation
   8,143.49 : 12,215.20 = 3,462.77 : x
2. Step 2: Convert to fraction form
   8,143.49/12,215.20 = 3,462.77/x
3. Step 3: Cross multiply
   8,143.49x = 12,215.20 × 3,462.77
4. Step 4: Simplify right side
   8,143.49x = 42,298,428.10
5. Step 5: Solve for x
   x = 42,298,428.10/8,143.49
6. Step 6: Final answer
   x = 5,194.14