Finding the Fourth Proportional to 25,716.34, 35,488.83 and 15,106.42

Step by Step Solution

1. Step 1: Write the proportion equation
   25,716.34 : 35,488.83 = 15,106.42 : x
2. Step 2: Convert to fraction form
   25,716.34/35,488.83 = 15,106.42/x
3. Step 3: Cross multiply
   25,716.34x = 35,488.83 × 15,106.42
4. Step 4: Simplify right side
   25,716.34x = 536,109,171.29
5. Step 5: Solve for x
   x = 536,109,171.29/25,716.34
6. Step 6: Final answer
   x = 20,847.02