Finding the Fourth Proportional to 18,488.16, 25,513.20 and 10,104.72

Step by Step Solution

1. Step 1: Write the proportion equation
   18,488.16 : 25,513.20 = 10,104.72 : x
2. Step 2: Convert to fraction form
   18,488.16/25,513.20 = 10,104.72/x
3. Step 3: Cross multiply
   18,488.16x = 25,513.20 × 10,104.72
4. Step 4: Simplify right side
   18,488.16x = 257,803,742.30
5. Step 5: Solve for x
   x = 257,803,742.30/18,488.16
6. Step 6: Final answer
   x = 13,944.26