Finding the Fourth Proportional to 5,127.72, 7,108.89 and 4,947.54

Step by Step Solution

1. Step 1: Write the proportion equation
   5,127.72 : 7,108.89 = 4,947.54 : x
2. Step 2: Convert to fraction form
   5,127.72/7,108.89 = 4,947.54/x
3. Step 3: Cross multiply
   5,127.72x = 7,108.89 × 4,947.54
4. Step 4: Simplify right side
   5,127.72x = 35,171,517.63
5. Step 5: Solve for x
   x = 35,171,517.63/5,127.72
6. Step 6: Final answer
   x = 6,859.09