Finding the Fourth Proportional to 5,091.20, 7,635.59 and 2,871.01

Step by Step Solution

1. Step 1: Write the proportion equation
   5,091.20 : 7,635.59 = 2,871.01 : x
2. Step 2: Convert to fraction form
   5,091.20/7,635.59 = 2,871.01/x
3. Step 3: Cross multiply
   5,091.20x = 7,635.59 × 2,871.01
4. Step 4: Simplify right side
   5,091.20x = 21,921,840.89
5. Step 5: Solve for x
   x = 21,921,840.89/5,091.20
6. Step 6: Final answer
   x = 4,305.83