Finding the Fourth Proportional to 16,681.59, 25,016.31 and 7,321.23

Step by Step Solution

1. Step 1: Write the proportion equation
   16,681.59 : 25,016.31 = 7,321.23 : x
2. Step 2: Convert to fraction form
   16,681.59/25,016.31 = 7,321.23/x
3. Step 3: Cross multiply
   16,681.59x = 25,016.31 × 7,321.23
4. Step 4: Simplify right side
   16,681.59x = 183,150,159.26
5. Step 5: Solve for x
   x = 183,150,159.26/16,681.59
6. Step 6: Final answer
   x = 10,979.18