Finding the Fourth Proportional to 8,958.64, 12,362.16 and 4,978.48

Step by Step Solution

1. Step 1: Write the proportion equation
   8,958.64 : 12,362.16 = 4,978.48 : x
2. Step 2: Convert to fraction form
   8,958.64/12,362.16 = 4,978.48/x
3. Step 3: Cross multiply
   8,958.64x = 12,362.16 × 4,978.48
4. Step 4: Simplify right side
   8,958.64x = 61,544,766.32
5. Step 5: Solve for x
   x = 61,544,766.32/8,958.64
6. Step 6: Final answer
   x = 6,869.88