Finding the Fourth Proportional to 18,402.72, 25,396.55 and 10,445.69

Step by Step Solution

1. Step 1: Write the proportion equation
   18,402.72 : 25,396.55 = 10,445.69 : x
2. Step 2: Convert to fraction form
   18,402.72/25,396.55 = 10,445.69/x
3. Step 3: Cross multiply
   18,402.72x = 25,396.55 × 10,445.69
4. Step 4: Simplify right side
   18,402.72x = 265,284,309.16
5. Step 5: Solve for x
   x = 265,284,309.16/18,402.72
6. Step 6: Final answer
   x = 14,415.49