Finding the Fourth Proportional to 12,696.91, 17,521.32 and 7,031.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,696.91 : 17,521.32 = 7,031.89 : x
2. Step 2: Convert to fraction form
   12,696.91/17,521.32 = 7,031.89/x
3. Step 3: Cross multiply
   12,696.91x = 17,521.32 × 7,031.89
4. Step 4: Simplify right side
   12,696.91x = 123,207,994.89
5. Step 5: Solve for x
   x = 123,207,994.89/12,696.91
6. Step 6: Final answer
   x = 9,703.78