Finding the Fourth Proportional to 18,507.50, 25,540.35 and 10,124.18

Step by Step Solution

1. Step 1: Write the proportion equation
   18,507.50 : 25,540.35 = 10,124.18 : x
2. Step 2: Convert to fraction form
   18,507.50/25,540.35 = 10,124.18/x
3. Step 3: Cross multiply
   18,507.50x = 25,540.35 × 10,124.18
4. Step 4: Simplify right side
   18,507.50x = 258,575,100.66
5. Step 5: Solve for x
   x = 258,575,100.66/18,507.50
6. Step 6: Final answer
   x = 13,971.37