Finding the Fourth Proportional to 25,697.32, 35,461.42 and 15,086.68

Step by Step Solution

1. Step 1: Write the proportion equation
   25,697.32 : 35,461.42 = 15,086.68 : x
2. Step 2: Convert to fraction form
   25,697.32/35,461.42 = 15,086.68/x
3. Step 3: Cross multiply
   25,697.32x = 35,461.42 × 15,086.68
4. Step 4: Simplify right side
   25,697.32x = 534,995,095.89
5. Step 5: Solve for x
   x = 534,995,095.89/25,697.32
6. Step 6: Final answer
   x = 20,819.10