Finding the Fourth Proportional to 12,868.07, 17,759.81 and 7,835.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,868.07 : 17,759.81 = 7,835.23 : x
2. Step 2: Convert to fraction form
   12,868.07/17,759.81 = 7,835.23/x
3. Step 3: Cross multiply
   12,868.07x = 17,759.81 × 7,835.23
4. Step 4: Simplify right side
   12,868.07x = 139,152,193.82
5. Step 5: Solve for x
   x = 139,152,193.82/12,868.07
6. Step 6: Final answer
   x = 10,813.76