Finding the Fourth Proportional to 18,499.32, 25,529.10 and 11,424.12

Step by Step Solution

1. Step 1: Write the proportion equation
   18,499.32 : 25,529.10 = 11,424.12 : x
2. Step 2: Convert to fraction form
   18,499.32/25,529.10 = 11,424.12/x
3. Step 3: Cross multiply
   18,499.32x = 25,529.10 × 11,424.12
4. Step 4: Simplify right side
   18,499.32x = 291,647,501.89
5. Step 5: Solve for x
   x = 291,647,501.89/18,499.32
6. Step 6: Final answer
   x = 15,765.31