Finding the Fourth Proportional to 12,876.30, 17,766.72 and 7,837.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,876.30 : 17,766.72 = 7,837.14 : x
2. Step 2: Convert to fraction form
   12,876.30/17,766.72 = 7,837.14/x
3. Step 3: Cross multiply
   12,876.30x = 17,766.72 × 7,837.14
4. Step 4: Simplify right side
   12,876.30x = 139,240,271.98
5. Step 5: Solve for x
   x = 139,240,271.98/12,876.30
6. Step 6: Final answer
   x = 10,813.69