Finding the Fourth Proportional to 5,113.59, 7,057.41 and 3,123.73

Step by Step Solution

1. Step 1: Write the proportion equation
   5,113.59 : 7,057.41 = 3,123.73 : x
2. Step 2: Convert to fraction form
   5,113.59/7,057.41 = 3,123.73/x
3. Step 3: Cross multiply
   5,113.59x = 7,057.41 × 3,123.73
4. Step 4: Simplify right side
   5,113.59x = 22,045,443.34
5. Step 5: Solve for x
   x = 22,045,443.34/5,113.59
6. Step 6: Final answer
   x = 4,311.15