Finding the Fourth Proportional to 12,694.58, 17,518.30 and 7,029.20

Step by Step Solution

1. Step 1: Write the proportion equation
   12,694.58 : 17,518.30 = 7,029.20 : x
2. Step 2: Convert to fraction form
   12,694.58/17,518.30 = 7,029.20/x
3. Step 3: Cross multiply
   12,694.58x = 17,518.30 × 7,029.20
4. Step 4: Simplify right side
   12,694.58x = 123,139,695.73
5. Step 5: Solve for x
   x = 123,139,695.73/12,694.58
6. Step 6: Final answer
   x = 9,700.18