Finding the Fourth Proportional to 18,410.22, 25,401.69 and 10,855.95

Step by Step Solution

1. Step 1: Write the proportion equation
   18,410.22 : 25,401.69 = 10,855.95 : x
2. Step 2: Convert to fraction form
   18,410.22/25,401.69 = 10,855.95/x
3. Step 3: Cross multiply
   18,410.22x = 25,401.69 × 10,855.95
4. Step 4: Simplify right side
   18,410.22x = 275,759,476.56
5. Step 5: Solve for x
   x = 275,759,476.56/18,410.22
6. Step 6: Final answer
   x = 14,978.61