Finding the Fourth Proportional to 25,690.69, 38,538.42 and 10,104.67

Step by Step Solution

1. Step 1: Write the proportion equation
   25,690.69 : 38,538.42 = 10,104.67 : x
2. Step 2: Convert to fraction form
   25,690.69/38,538.42 = 10,104.67/x
3. Step 3: Cross multiply
   25,690.69x = 38,538.42 × 10,104.67
4. Step 4: Simplify right side
   25,690.69x = 389,418,016.42
5. Step 5: Solve for x
   x = 389,418,016.42/25,690.69
6. Step 6: Final answer
   x = 15,157.94