Finding the Fourth Proportional to 25,997.82, 35,886.18 and 15,387.42

Step by Step Solution

1. Step 1: Write the proportion equation
   25,997.82 : 35,886.18 = 15,387.42 : x
2. Step 2: Convert to fraction form
   25,997.82/35,886.18 = 15,387.42/x
3. Step 3: Cross multiply
   25,997.82x = 35,886.18 × 15,387.42
4. Step 4: Simplify right side
   25,997.82x = 552,195,723.86
5. Step 5: Solve for x
   x = 552,195,723.86/25,997.82
6. Step 6: Final answer
   x = 21,240.08