Finding the Fourth Proportional to 7,100.87, 9,793.71 and 5,211.61

Step by Step Solution

1. Step 1: Write the proportion equation
   7,100.87 : 9,793.71 = 5,211.61 : x
2. Step 2: Convert to fraction form
   7,100.87/9,793.71 = 5,211.61/x
3. Step 3: Cross multiply
   7,100.87x = 9,793.71 × 5,211.61
4. Step 4: Simplify right side
   7,100.87x = 51,040,972.49
5. Step 5: Solve for x
   x = 51,040,972.49/7,100.87
6. Step 6: Final answer
   x = 7,187.99