Finding the Fourth Proportional to 25,697.49, 35,462.78 and 15,087.30

Step by Step Solution

1. Step 1: Write the proportion equation
   25,697.49 : 35,462.78 = 15,087.30 : x
2. Step 2: Convert to fraction form
   25,697.49/35,462.78 = 15,087.30/x
3. Step 3: Cross multiply
   25,697.49x = 35,462.78 × 15,087.30
4. Step 4: Simplify right side
   25,697.49x = 535,037,600.69
5. Step 5: Solve for x
   x = 535,037,600.69/25,697.49
6. Step 6: Final answer
   x = 20,820.62