Finding the Fourth Proportional to 17,196.78, 25,760.61 and 8,971.50

Step by Step Solution

1. Step 1: Write the proportion equation
   17,196.78 : 25,760.61 = 8,971.50 : x
2. Step 2: Convert to fraction form
   17,196.78/25,760.61 = 8,971.50/x
3. Step 3: Cross multiply
   17,196.78x = 25,760.61 × 8,971.50
4. Step 4: Simplify right side
   17,196.78x = 231,111,312.62
5. Step 5: Solve for x
   x = 231,111,312.62/17,196.78
6. Step 6: Final answer
   x = 13,439.22