Finding the Fourth Proportional to 6,923.59, 9,555.37 and 3,898.80

Step by Step Solution

1. Step 1: Write the proportion equation
   6,923.59 : 9,555.37 = 3,898.80 : x
2. Step 2: Convert to fraction form
   6,923.59/9,555.37 = 3,898.80/x
3. Step 3: Cross multiply
   6,923.59x = 9,555.37 × 3,898.80
4. Step 4: Simplify right side
   6,923.59x = 37,254,466.81
5. Step 5: Solve for x
   x = 37,254,466.81/6,923.59
6. Step 6: Final answer
   x = 5,380.80