Finding the Fourth Proportional to 8,087.78, 12,131.56 and 2,541.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,087.78 : 12,131.56 = 2,541.47 : x
2. Step 2: Convert to fraction form
   8,087.78/12,131.56 = 2,541.47/x
3. Step 3: Cross multiply
   8,087.78x = 12,131.56 × 2,541.47
4. Step 4: Simplify right side
   8,087.78x = 30,831,938.31
5. Step 5: Solve for x
   x = 30,831,938.31/8,087.78
6. Step 6: Final answer
   x = 3,812.16