Finding the Fourth Proportional to 16,871.56, 25,322.69 and 8,980.71

Step by Step Solution

1. Step 1: Write the proportion equation
   16,871.56 : 25,322.69 = 8,980.71 : x
2. Step 2: Convert to fraction form
   16,871.56/25,322.69 = 8,980.71/x
3. Step 3: Cross multiply
   16,871.56x = 25,322.69 × 8,980.71
4. Step 4: Simplify right side
   16,871.56x = 227,415,735.31
5. Step 5: Solve for x
   x = 227,415,735.31/16,871.56
6. Step 6: Final answer
   x = 13,479.24