Finding the Fourth Proportional to 18,520.42, 25,557.98 and 10,022.34

Step by Step Solution

1. Step 1: Write the proportion equation
   18,520.42 : 25,557.98 = 10,022.34 : x
2. Step 2: Convert to fraction form
   18,520.42/25,557.98 = 10,022.34/x
3. Step 3: Cross multiply
   18,520.42x = 25,557.98 × 10,022.34
4. Step 4: Simplify right side
   18,520.42x = 256,150,765.27
5. Step 5: Solve for x
   x = 256,150,765.27/18,520.42
6. Step 6: Final answer
   x = 13,830.72