Finding the Fourth Proportional to 8,959.37, 12,362.55 and 4,980.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,959.37 : 12,362.55 = 4,980.47 : x
2. Step 2: Convert to fraction form
   8,959.37/12,362.55 = 4,980.47/x
3. Step 3: Cross multiply
   8,959.37x = 12,362.55 × 4,980.47
4. Step 4: Simplify right side
   8,959.37x = 61,571,309.40
5. Step 5: Solve for x
   x = 61,571,309.40/8,959.37
6. Step 6: Final answer
   x = 6,872.28