Finding the Fourth Proportional to 6,826.48, 9,418.91 and 3,994.08

Step by Step Solution

1. Step 1: Write the proportion equation
   6,826.48 : 9,418.91 = 3,994.08 : x
2. Step 2: Convert to fraction form
   6,826.48/9,418.91 = 3,994.08/x
3. Step 3: Cross multiply
   6,826.48x = 9,418.91 × 3,994.08
4. Step 4: Simplify right side
   6,826.48x = 37,619,915.47
5. Step 5: Solve for x
   x = 37,619,915.47/6,826.48
6. Step 6: Final answer
   x = 5,510.88