Finding the Fourth Proportional to 12,026.31, 18,040.37 and 3,261.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,026.31 : 18,040.37 = 3,261.09 : x
2. Step 2: Convert to fraction form
   12,026.31/18,040.37 = 3,261.09/x
3. Step 3: Cross multiply
   12,026.31x = 18,040.37 × 3,261.09
4. Step 4: Simplify right side
   12,026.31x = 58,831,253.90
5. Step 5: Solve for x
   x = 58,831,253.90/12,026.31
6. Step 6: Final answer
   x = 4,891.88