Finding the Fourth Proportional to 12,696.48, 17,520.92 and 7,031.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,696.48 : 17,520.92 = 7,031.10 : x
2. Step 2: Convert to fraction form
   12,696.48/17,520.92 = 7,031.10/x
3. Step 3: Cross multiply
   12,696.48x = 17,520.92 × 7,031.10
4. Step 4: Simplify right side
   12,696.48x = 123,191,340.61
5. Step 5: Solve for x
   x = 123,191,340.61/12,696.48
6. Step 6: Final answer
   x = 9,702.79