Finding the Fourth Proportional to 8,960.42, 13,440.86 and 2,386.62

Step by Step Solution

1. Step 1: Write the proportion equation
   8,960.42 : 13,440.86 = 2,386.62 : x
2. Step 2: Convert to fraction form
   8,960.42/13,440.86 = 2,386.62/x
3. Step 3: Cross multiply
   8,960.42x = 13,440.86 × 2,386.62
4. Step 4: Simplify right side
   8,960.42x = 32,078,225.29
5. Step 5: Solve for x
   x = 32,078,225.29/8,960.42
6. Step 6: Final answer
   x = 3,579.99