Finding the Fourth Proportional to 18,499.32, 25,529.16 and 10,115.82

Step by Step Solution

1. Step 1: Write the proportion equation
   18,499.32 : 25,529.16 = 10,115.82 : x
2. Step 2: Convert to fraction form
   18,499.32/25,529.16 = 10,115.82/x
3. Step 3: Cross multiply
   18,499.32x = 25,529.16 × 10,115.82
4. Step 4: Simplify right side
   18,499.32x = 258,248,387.31
5. Step 5: Solve for x
   x = 258,248,387.31/18,499.32
6. Step 6: Final answer
   x = 13,959.89