Finding the Fourth Proportional to 16,911.59, 23,321.52 and 15,250.34

Step by Step Solution

1. Step 1: Write the proportion equation
   16,911.59 : 23,321.52 = 15,250.34 : x
2. Step 2: Convert to fraction form
   16,911.59/23,321.52 = 15,250.34/x
3. Step 3: Cross multiply
   16,911.59x = 23,321.52 × 15,250.34
4. Step 4: Simplify right side
   16,911.59x = 355,661,167.62
5. Step 5: Solve for x
   x = 355,661,167.62/16,911.59
6. Step 6: Final answer
   x = 21,030.62