Finding the Fourth Proportional to 12,197.72, 18,294.69 and 3,876.65

Step by Step Solution

1. Step 1: Write the proportion equation
   12,197.72 : 18,294.69 = 3,876.65 : x
2. Step 2: Convert to fraction form
   12,197.72/18,294.69 = 3,876.65/x
3. Step 3: Cross multiply
   12,197.72x = 18,294.69 × 3,876.65
4. Step 4: Simplify right side
   12,197.72x = 70,922,018.52
5. Step 5: Solve for x
   x = 70,922,018.52/12,197.72
6. Step 6: Final answer
   x = 5,814.37