Finding the Fourth Proportional to 18,109.05, 25,369.95 and 18,109.05

Step by Step Solution

1. Step 1: Write the proportion equation
   18,109.05 : 25,369.95 = 18,109.05 : x
2. Step 2: Convert to fraction form
   18,109.05/25,369.95 = 18,109.05/x
3. Step 3: Cross multiply
   18,109.05x = 25,369.95 × 18,109.05
4. Step 4: Simplify right side
   18,109.05x = 459,425,693.05
5. Step 5: Solve for x
   x = 459,425,693.05/18,109.05
6. Step 6: Final answer
   x = 25,369.95