Finding the Fourth Proportional to 8,980.20, 12,388.82 and 5,441.45

Step by Step Solution

1. Step 1: Write the proportion equation
   8,980.20 : 12,388.82 = 5,441.45 : x
2. Step 2: Convert to fraction form
   8,980.20/12,388.82 = 5,441.45/x
3. Step 3: Cross multiply
   8,980.20x = 12,388.82 × 5,441.45
4. Step 4: Simplify right side
   8,980.20x = 67,413,055.44
5. Step 5: Solve for x
   x = 67,413,055.44/8,980.20
6. Step 6: Final answer
   x = 7,506.85