Finding the Fourth Proportional to 12,623.10, 18,934.69 and 3,857.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,623.10 : 18,934.69 = 3,857.98 : x
2. Step 2: Convert to fraction form
   12,623.10/18,934.69 = 3,857.98/x
3. Step 3: Cross multiply
   12,623.10x = 18,934.69 × 3,857.98
4. Step 4: Simplify right side
   12,623.10x = 73,049,560.65
5. Step 5: Solve for x
   x = 73,049,560.65/12,623.10
6. Step 6: Final answer
   x = 5,786.98