Finding the Fourth Proportional to 18,238.75, 25,168.83 and 10,280.50

Step by Step Solution

1. Step 1: Write the proportion equation
   18,238.75 : 25,168.83 = 10,280.50 : x
2. Step 2: Convert to fraction form
   18,238.75/25,168.83 = 10,280.50/x
3. Step 3: Cross multiply
   18,238.75x = 25,168.83 × 10,280.50
4. Step 4: Simplify right side
   18,238.75x = 258,748,156.82
5. Step 5: Solve for x
   x = 258,748,156.82/18,238.75
6. Step 6: Final answer
   x = 14,186.73