Finding the Fourth Proportional to 25,429.10, 38,118.32 and 12,078.68

Step by Step Solution

1. Step 1: Write the proportion equation
   25,429.10 : 38,118.32 = 12,078.68 : x
2. Step 2: Convert to fraction form
   25,429.10/38,118.32 = 12,078.68/x
3. Step 3: Cross multiply
   25,429.10x = 38,118.32 × 12,078.68
4. Step 4: Simplify right side
   25,429.10x = 460,418,989.42
5. Step 5: Solve for x
   x = 460,418,989.42/25,429.10
6. Step 6: Final answer
   x = 18,105.99