Finding the Fourth Proportional to 8,380.90, 12,573.42 and 5,920.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,380.90 : 12,573.42 = 5,920.54 : x
2. Step 2: Convert to fraction form
   8,380.90/12,573.42 = 5,920.54/x
3. Step 3: Cross multiply
   8,380.90x = 12,573.42 × 5,920.54
4. Step 4: Simplify right side
   8,380.90x = 74,441,436.05
5. Step 5: Solve for x
   x = 74,441,436.05/8,380.90
6. Step 6: Final answer
   x = 8,882.27