Finding the Fourth Proportional to 8,272.81, 12,411.78 and 2,651.32

Step by Step Solution

1. Step 1: Write the proportion equation
   8,272.81 : 12,411.78 = 2,651.32 : x
2. Step 2: Convert to fraction form
   8,272.81/12,411.78 = 2,651.32/x
3. Step 3: Cross multiply
   8,272.81x = 12,411.78 × 2,651.32
4. Step 4: Simplify right side
   8,272.81x = 32,907,600.55
5. Step 5: Solve for x
   x = 32,907,600.55/8,272.81
6. Step 6: Final answer
   x = 3,977.80