Finding the Fourth Proportional to 8,960.32, 13,443.76 and 3,118.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,960.32 : 13,443.76 = 3,118.60 : x
2. Step 2: Convert to fraction form
   8,960.32/13,443.76 = 3,118.60/x
3. Step 3: Cross multiply
   8,960.32x = 13,443.76 × 3,118.60
4. Step 4: Simplify right side
   8,960.32x = 41,925,642.72
5. Step 5: Solve for x
   x = 41,925,642.72/8,960.32
6. Step 6: Final answer
   x = 4,679.04