Finding the Fourth Proportional to 12,694.77, 17,518.20 and 7,029.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,694.77 : 17,518.20 = 7,029.12 : x
2. Step 2: Convert to fraction form
   12,694.77/17,518.20 = 7,029.12/x
3. Step 3: Cross multiply
   12,694.77x = 17,518.20 × 7,029.12
4. Step 4: Simplify right side
   12,694.77x = 123,137,529.98
5. Step 5: Solve for x
   x = 123,137,529.98/12,694.77
6. Step 6: Final answer
   x = 9,699.86