Finding the Fourth Proportional to 25,856.97, 38,789.12 and 8,322.72

Step by Step Solution

1. Step 1: Write the proportion equation
   25,856.97 : 38,789.12 = 8,322.72 : x
2. Step 2: Convert to fraction form
   25,856.97/38,789.12 = 8,322.72/x
3. Step 3: Cross multiply
   25,856.97x = 38,789.12 × 8,322.72
4. Step 4: Simplify right side
   25,856.97x = 322,830,984.81
5. Step 5: Solve for x
   x = 322,830,984.81/25,856.97
6. Step 6: Final answer
   x = 12,485.26