Finding the Fourth Proportional to 16,861.34, 25,291.40 and 5,174.25

Step by Step Solution

1. Step 1: Write the proportion equation
   16,861.34 : 25,291.40 = 5,174.25 : x
2. Step 2: Convert to fraction form
   16,861.34/25,291.40 = 5,174.25/x
3. Step 3: Cross multiply
   16,861.34x = 25,291.40 × 5,174.25
4. Step 4: Simplify right side
   16,861.34x = 130,864,000.58
5. Step 5: Solve for x
   x = 130,864,000.58/16,861.34
6. Step 6: Final answer
   x = 7,761.19