Finding the Fourth Proportional to 8,280.64, 12,401.82 and 4,986.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,280.64 : 12,401.82 = 4,986.48 : x
2. Step 2: Convert to fraction form
   8,280.64/12,401.82 = 4,986.48/x
3. Step 3: Cross multiply
   8,280.64x = 12,401.82 × 4,986.48
4. Step 4: Simplify right side
   8,280.64x = 61,841,427.39
5. Step 5: Solve for x
   x = 61,841,427.39/8,280.64
6. Step 6: Final answer
   x = 7,468.19