Finding the Fourth Proportional to 6,813.76, 9,399.83 and 3,981.25

Step by Step Solution

1. Step 1: Write the proportion equation
   6,813.76 : 9,399.83 = 3,981.25 : x
2. Step 2: Convert to fraction form
   6,813.76/9,399.83 = 3,981.25/x
3. Step 3: Cross multiply
   6,813.76x = 9,399.83 × 3,981.25
4. Step 4: Simplify right side
   6,813.76x = 37,423,079.03
5. Step 5: Solve for x
   x = 37,423,079.03/6,813.76
6. Step 6: Final answer
   x = 5,492.28