Finding the Fourth Proportional to 5,139.83, 7,092.62 and 2,901.80

Step by Step Solution

1. Step 1: Write the proportion equation
   5,139.83 : 7,092.62 = 2,901.80 : x
2. Step 2: Convert to fraction form
   5,139.83/7,092.62 = 2,901.80/x
3. Step 3: Cross multiply
   5,139.83x = 7,092.62 × 2,901.80
4. Step 4: Simplify right side
   5,139.83x = 20,581,364.72
5. Step 5: Solve for x
   x = 20,581,364.72/5,139.83
6. Step 6: Final answer
   x = 4,004.29