Finding the Fourth Proportional to 18,380.31, 25,364.82 and 10,422.53

Step by Step Solution

1. Step 1: Write the proportion equation
   18,380.31 : 25,364.82 = 10,422.53 : x
2. Step 2: Convert to fraction form
   18,380.31/25,364.82 = 10,422.53/x
3. Step 3: Cross multiply
   18,380.31x = 25,364.82 × 10,422.53
4. Step 4: Simplify right side
   18,380.31x = 264,365,597.39
5. Step 5: Solve for x
   x = 264,365,597.39/18,380.31
6. Step 6: Final answer
   x = 14,383.09