Finding the Fourth Proportional to 16,858.10, 25,286.01 and 5,171.21

Step by Step Solution

1. Step 1: Write the proportion equation
   16,858.10 : 25,286.01 = 5,171.21 : x
2. Step 2: Convert to fraction form
   16,858.10/25,286.01 = 5,171.21/x
3. Step 3: Cross multiply
   16,858.10x = 25,286.01 × 5,171.21
4. Step 4: Simplify right side
   16,858.10x = 130,759,141.34
5. Step 5: Solve for x
   x = 130,759,141.34/16,858.10
6. Step 6: Final answer
   x = 7,756.46