Finding the Fourth Proportional to 25,187.69, 37,777.28 and 8,315.48

Step by Step Solution

1. Step 1: Write the proportion equation
   25,187.69 : 37,777.28 = 8,315.48 : x
2. Step 2: Convert to fraction form
   25,187.69/37,777.28 = 8,315.48/x
3. Step 3: Cross multiply
   25,187.69x = 37,777.28 × 8,315.48
4. Step 4: Simplify right side
   25,187.69x = 314,135,985.83
5. Step 5: Solve for x
   x = 314,135,985.83/25,187.69
6. Step 6: Final answer
   x = 12,471.81