Finding the Fourth Proportional to 5,105.92, 7,045.28 and 2,867.89

Step by Step Solution

1. Step 1: Write the proportion equation
   5,105.92 : 7,045.28 = 2,867.89 : x
2. Step 2: Convert to fraction form
   5,105.92/7,045.28 = 2,867.89/x
3. Step 3: Cross multiply
   5,105.92x = 7,045.28 × 2,867.89
4. Step 4: Simplify right side
   5,105.92x = 20,205,056.11
5. Step 5: Solve for x
   x = 20,205,056.11/5,105.92
6. Step 6: Final answer
   x = 3,957.18