Finding the Fourth Proportional to 7,863.98, 10,850.50 and 5,740.67

Step by Step Solution

1. Step 1: Write the proportion equation
   7,863.98 : 10,850.50 = 5,740.67 : x
2. Step 2: Convert to fraction form
   7,863.98/10,850.50 = 5,740.67/x
3. Step 3: Cross multiply
   7,863.98x = 10,850.50 × 5,740.67
4. Step 4: Simplify right side
   7,863.98x = 62,289,139.84
5. Step 5: Solve for x
   x = 62,289,139.84/7,863.98
6. Step 6: Final answer
   x = 7,920.82