Finding the Fourth Proportional to 5,139.38, 7,089.50 and 3,457.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,139.38 : 7,089.50 = 3,457.82 : x
2. Step 2: Convert to fraction form
   5,139.38/7,089.50 = 3,457.82/x
3. Step 3: Cross multiply
   5,139.38x = 7,089.50 × 3,457.82
4. Step 4: Simplify right side
   5,139.38x = 24,514,162.15
5. Step 5: Solve for x
   x = 24,514,162.15/5,139.38
6. Step 6: Final answer
   x = 4,769.87