Finding the Fourth Proportional to 3,756.40, 5,181.72 and 2,356.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,756.40 : 5,181.72 = 2,356.72 : x
2. Step 2: Convert to fraction form
   3,756.40/5,181.72 = 2,356.72/x
3. Step 3: Cross multiply
   3,756.40x = 5,181.72 × 2,356.72
4. Step 4: Simplify right side
   3,756.40x = 12,211,863.16
5. Step 5: Solve for x
   x = 12,211,863.16/3,756.40
6. Step 6: Final answer
   x = 3,250.95