Finding the Fourth Proportional to 8,465.37, 11,674.56 and 5,478.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,465.37 : 11,674.56 = 5,478.09 : x
2. Step 2: Convert to fraction form
   8,465.37/11,674.56 = 5,478.09/x
3. Step 3: Cross multiply
   8,465.37x = 11,674.56 × 5,478.09
4. Step 4: Simplify right side
   8,465.37x = 63,954,290.39
5. Step 5: Solve for x
   x = 63,954,290.39/8,465.37
6. Step 6: Final answer
   x = 7,554.81