Finding the Fourth Proportional to 25,369.10, 35,023.43 and 15,300.10

Step by Step Solution

1. Step 1: Write the proportion equation
   25,369.10 : 35,023.43 = 15,300.10 : x
2. Step 2: Convert to fraction form
   25,369.10/35,023.43 = 15,300.10/x
3. Step 3: Cross multiply
   25,369.10x = 35,023.43 × 15,300.10
4. Step 4: Simplify right side
   25,369.10x = 535,861,729.73
5. Step 5: Solve for x
   x = 535,861,729.73/25,369.10
6. Step 6: Final answer
   x = 21,122.62