Finding the Fourth Proportional to 5,127.83, 7,076.53 and 3,139.48

Step by Step Solution

1. Step 1: Write the proportion equation
   5,127.83 : 7,076.53 = 3,139.48 : x
2. Step 2: Convert to fraction form
   5,127.83/7,076.53 = 3,139.48/x
3. Step 3: Cross multiply
   5,127.83x = 7,076.53 × 3,139.48
4. Step 4: Simplify right side
   5,127.83x = 22,216,624.40
5. Step 5: Solve for x
   x = 22,216,624.40/5,127.83
6. Step 6: Final answer
   x = 4,332.56