Finding the Fourth Proportional to 12,876.67, 17,771.27 and 7,843.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,876.67 : 17,771.27 = 7,843.84 : x
2. Step 2: Convert to fraction form
   12,876.67/17,771.27 = 7,843.84/x
3. Step 3: Cross multiply
   12,876.67x = 17,771.27 × 7,843.84
4. Step 4: Simplify right side
   12,876.67x = 139,394,981.01
5. Step 5: Solve for x
   x = 139,394,981.01/12,876.67
6. Step 6: Final answer
   x = 10,825.39