Finding the Fourth Proportional to 12,868.57, 17,760.50 and 7,835.73

Step by Step Solution

1. Step 1: Write the proportion equation
   12,868.57 : 17,760.50 = 7,835.73 : x
2. Step 2: Convert to fraction form
   12,868.57/17,760.50 = 7,835.73/x
3. Step 3: Cross multiply
   12,868.57x = 17,760.50 × 7,835.73
4. Step 4: Simplify right side
   12,868.57x = 139,166,443.49
5. Step 5: Solve for x
   x = 139,166,443.49/12,868.57
6. Step 6: Final answer
   x = 10,814.45