Finding the Fourth Proportional to 12,696.26, 17,520.81 and 7,031.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,696.26 : 17,520.81 = 7,031.30 : x
2. Step 2: Convert to fraction form
   12,696.26/17,520.81 = 7,031.30/x
3. Step 3: Cross multiply
   12,696.26x = 17,520.81 × 7,031.30
4. Step 4: Simplify right side
   12,696.26x = 123,194,071.35
5. Step 5: Solve for x
   x = 123,194,071.35/12,696.26
6. Step 6: Final answer
   x = 9,703.18