Finding the Fourth Proportional to 12,142.31, 18,213.49 and 3,377.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,142.31 : 18,213.49 = 3,377.22 : x
2. Step 2: Convert to fraction form
   12,142.31/18,213.49 = 3,377.22/x
3. Step 3: Cross multiply
   12,142.31x = 18,213.49 × 3,377.22
4. Step 4: Simplify right side
   12,142.31x = 61,510,954.25
5. Step 5: Solve for x
   x = 61,510,954.25/12,142.31
6. Step 6: Final answer
   x = 5,065.84