Finding the Fourth Proportional to 25,282.56, 37,901.76 and 12,786.24

Step by Step Solution

1. Step 1: Write the proportion equation
   25,282.56 : 37,901.76 = 12,786.24 : x
2. Step 2: Convert to fraction form
   25,282.56/37,901.76 = 12,786.24/x
3. Step 3: Cross multiply
   25,282.56x = 37,901.76 × 12,786.24
4. Step 4: Simplify right side
   25,282.56x = 484,620,999.78
5. Step 5: Solve for x
   x = 484,620,999.78/25,282.56
6. Step 6: Final answer
   x = 19,168.19