Finding the Fourth Proportional to 18,479.82, 25,495.89 and 10,520.10

Step by Step Solution

1. Step 1: Write the proportion equation
   18,479.82 : 25,495.89 = 10,520.10 : x
2. Step 2: Convert to fraction form
   18,479.82/25,495.89 = 10,520.10/x
3. Step 3: Cross multiply
   18,479.82x = 25,495.89 × 10,520.10
4. Step 4: Simplify right side
   18,479.82x = 268,219,312.39
5. Step 5: Solve for x
   x = 268,219,312.39/18,479.82
6. Step 6: Final answer
   x = 14,514.17