Finding the Fourth Proportional to 5,105.67, 7,045.72 and 2,867.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,105.67 : 7,045.72 = 2,867.50 : x
2. Step 2: Convert to fraction form
   5,105.67/7,045.72 = 2,867.50/x
3. Step 3: Cross multiply
   5,105.67x = 7,045.72 × 2,867.50
4. Step 4: Simplify right side
   5,105.67x = 20,203,602.10
5. Step 5: Solve for x
   x = 20,203,602.10/5,105.67
6. Step 6: Final answer
   x = 3,957.09