Finding the Fourth Proportional to 8,142.73, 12,213.05 and 3,461.87

Step by Step Solution

1. Step 1: Write the proportion equation
   8,142.73 : 12,213.05 = 3,461.87 : x
2. Step 2: Convert to fraction form
   8,142.73/12,213.05 = 3,461.87/x
3. Step 3: Cross multiply
   8,142.73x = 12,213.05 × 3,461.87
4. Step 4: Simplify right side
   8,142.73x = 42,280,004.63
5. Step 5: Solve for x
   x = 42,280,004.63/8,142.73
6. Step 6: Final answer
   x = 5,192.36