Finding the Fourth Proportional to 8,142.76, 12,216.36 and 3,460.24

Step by Step Solution

1. Step 1: Write the proportion equation
   8,142.76 : 12,216.36 = 3,460.24 : x
2. Step 2: Convert to fraction form
   8,142.76/12,216.36 = 3,460.24/x
3. Step 3: Cross multiply
   8,142.76x = 12,216.36 × 3,460.24
4. Step 4: Simplify right side
   8,142.76x = 42,271,537.53
5. Step 5: Solve for x
   x = 42,271,537.53/8,142.76
6. Step 6: Final answer
   x = 5,191.30