Finding the Fourth Proportional to 8,980.82, 12,401.20 and 5,629.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,980.82 : 12,401.20 = 5,629.25 : x
2. Step 2: Convert to fraction form
   8,980.82/12,401.20 = 5,629.25/x
3. Step 3: Cross multiply
   8,980.82x = 12,401.20 × 5,629.25
4. Step 4: Simplify right side
   8,980.82x = 69,809,423.38
5. Step 5: Solve for x
   x = 69,809,423.38/8,980.82
6. Step 6: Final answer
   x = 7,773.16