Finding the Fourth Proportional to 5,139.03, 7,091.78 and 2,900.73

Step by Step Solution

1. Step 1: Write the proportion equation
   5,139.03 : 7,091.78 = 2,900.73 : x
2. Step 2: Convert to fraction form
   5,139.03/7,091.78 = 2,900.73/x
3. Step 3: Cross multiply
   5,139.03x = 7,091.78 × 2,900.73
4. Step 4: Simplify right side
   5,139.03x = 20,571,339.00
5. Step 5: Solve for x
   x = 20,571,339.00/5,139.03
6. Step 6: Final answer
   x = 4,002.96