Finding the Fourth Proportional to 4,181.78, 5,757.72 and 3,551

Step by Step Solution

1. Step 1: Write the proportion equation
   4,181.78 : 5,757.72 = 3,551 : x
2. Step 2: Convert to fraction form
   4,181.78/5,757.72 = 3,551/x
3. Step 3: Cross multiply
   4,181.78x = 5,757.72 × 3,551
4. Step 4: Simplify right side
   4,181.78x = 20,445,663.72
5. Step 5: Solve for x
   x = 20,445,663.72/4,181.78
6. Step 6: Final answer
   x = 4,889.23