Finding the Fourth Proportional to 18,139.82, 25,038.18 and 10,969.75

Step by Step Solution

1. Step 1: Write the proportion equation
   18,139.82 : 25,038.18 = 10,969.75 : x
2. Step 2: Convert to fraction form
   18,139.82/25,038.18 = 10,969.75/x
3. Step 3: Cross multiply
   18,139.82x = 25,038.18 × 10,969.75
4. Step 4: Simplify right side
   18,139.82x = 274,662,575.06
5. Step 5: Solve for x
   x = 274,662,575.06/18,139.82
6. Step 6: Final answer
   x = 15,141.42