Finding the Fourth Proportional to 5,139.42, 7,092.27 and 2,901.28

Step by Step Solution

1. Step 1: Write the proportion equation
   5,139.42 : 7,092.27 = 2,901.28 : x
2. Step 2: Convert to fraction form
   5,139.42/7,092.27 = 2,901.28/x
3. Step 3: Cross multiply
   5,139.42x = 7,092.27 × 2,901.28
4. Step 4: Simplify right side
   5,139.42x = 20,576,661.11
5. Step 5: Solve for x
   x = 20,576,661.11/5,139.42
6. Step 6: Final answer
   x = 4,003.69