Finding the Fourth Proportional to 6,789.50, 9,367.89 and 3,955.13

Step by Step Solution

1. Step 1: Write the proportion equation
   6,789.50 : 9,367.89 = 3,955.13 : x
2. Step 2: Convert to fraction form
   6,789.50/9,367.89 = 3,955.13/x
3. Step 3: Cross multiply
   6,789.50x = 9,367.89 × 3,955.13
4. Step 4: Simplify right side
   6,789.50x = 37,051,222.78
5. Step 5: Solve for x
   x = 37,051,222.78/6,789.50
6. Step 6: Final answer
   x = 5,457.14