Finding the Fourth Proportional to 17,131.72, 25,702.06 and 7,271.40

Step by Step Solution

1. Step 1: Write the proportion equation
   17,131.72 : 25,702.06 = 7,271.40 : x
2. Step 2: Convert to fraction form
   17,131.72/25,702.06 = 7,271.40/x
3. Step 3: Cross multiply
   17,131.72x = 25,702.06 × 7,271.40
4. Step 4: Simplify right side
   17,131.72x = 186,889,959.08
5. Step 5: Solve for x
   x = 186,889,959.08/17,131.72
6. Step 6: Final answer
   x = 10,909.00