Finding the Fourth Proportional to 6,112.88, 8,440.94 and 3,878.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,112.88 : 8,440.94 = 3,878.72 : x
2. Step 2: Convert to fraction form
   6,112.88/8,440.94 = 3,878.72/x
3. Step 3: Cross multiply
   6,112.88x = 8,440.94 × 3,878.72
4. Step 4: Simplify right side
   6,112.88x = 32,739,981.20
5. Step 5: Solve for x
   x = 32,739,981.20/6,112.88
6. Step 6: Final answer
   x = 5,355.91