Finding the Fourth Proportional to 25,698.95, 38,554.56 and 8,168.81

Step by Step Solution

1. Step 1: Write the proportion equation
   25,698.95 : 38,554.56 = 8,168.81 : x
2. Step 2: Convert to fraction form
   25,698.95/38,554.56 = 8,168.81/x
3. Step 3: Cross multiply
   25,698.95x = 38,554.56 × 8,168.81
4. Step 4: Simplify right side
   25,698.95x = 314,944,875.27
5. Step 5: Solve for x
   x = 314,944,875.27/25,698.95
6. Step 6: Final answer
   x = 12,255.17