Finding the Fourth Proportional to 18,180.78, 25,086.41 and 10,113.37

Step by Step Solution

1. Step 1: Write the proportion equation
   18,180.78 : 25,086.41 = 10,113.37 : x
2. Step 2: Convert to fraction form
   18,180.78/25,086.41 = 10,113.37/x
3. Step 3: Cross multiply
   18,180.78x = 25,086.41 × 10,113.37
4. Step 4: Simplify right side
   18,180.78x = 253,708,040.59
5. Step 5: Solve for x
   x = 253,708,040.59/18,180.78
6. Step 6: Final answer
   x = 13,954.74