Finding the Fourth Proportional to 12,613.98, 18,874.25 and 7,896.41

Step by Step Solution

1. Step 1: Write the proportion equation
   12,613.98 : 18,874.25 = 7,896.41 : x
2. Step 2: Convert to fraction form
   12,613.98/18,874.25 = 7,896.41/x
3. Step 3: Cross multiply
   12,613.98x = 18,874.25 × 7,896.41
4. Step 4: Simplify right side
   12,613.98x = 149,038,682.59
5. Step 5: Solve for x
   x = 149,038,682.59/12,613.98
6. Step 6: Final answer
   x = 11,815.36