Finding the Fourth Proportional to 18,609.93, 25,681.59 and 10,111.98

Step by Step Solution

1. Step 1: Write the proportion equation
   18,609.93 : 25,681.59 = 10,111.98 : x
2. Step 2: Convert to fraction form
   18,609.93/25,681.59 = 10,111.98/x
3. Step 3: Cross multiply
   18,609.93x = 25,681.59 × 10,111.98
4. Step 4: Simplify right side
   18,609.93x = 259,691,724.45
5. Step 5: Solve for x
   x = 259,691,724.45/18,609.93
6. Step 6: Final answer
   x = 13,954.47