Finding the Fourth Proportional to 18,494.81, 25,522.94 and 10,111.31

Step by Step Solution

1. Step 1: Write the proportion equation
   18,494.81 : 25,522.94 = 10,111.31 : x
2. Step 2: Convert to fraction form
   18,494.81/25,522.94 = 10,111.31/x
3. Step 3: Cross multiply
   18,494.81x = 25,522.94 × 10,111.31
4. Step 4: Simplify right side
   18,494.81x = 258,070,358.45
5. Step 5: Solve for x
   x = 258,070,358.45/18,494.81
6. Step 6: Final answer
   x = 13,953.66