Finding the Fourth Proportional to 8,142.40, 12,215.22 and 3,760.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,142.40 : 12,215.22 = 3,760.84 : x
2. Step 2: Convert to fraction form
   8,142.40/12,215.22 = 3,760.84/x
3. Step 3: Cross multiply
   8,142.40x = 12,215.22 × 3,760.84
4. Step 4: Simplify right side
   8,142.40x = 45,939,487.98
5. Step 5: Solve for x
   x = 45,939,487.98/8,142.40
6. Step 6: Final answer
   x = 5,642.01