Finding the Fourth Proportional to 6,813.69, 9,402.89 and 3,983.01

Step by Step Solution

1. Step 1: Write the proportion equation
   6,813.69 : 9,402.89 = 3,983.01 : x
2. Step 2: Convert to fraction form
   6,813.69/9,402.89 = 3,983.01/x
3. Step 3: Cross multiply
   6,813.69x = 9,402.89 × 3,983.01
4. Step 4: Simplify right side
   6,813.69x = 37,451,784.98
5. Step 5: Solve for x
   x = 37,451,784.98/6,813.69
6. Step 6: Final answer
   x = 5,496.55