Finding the Fourth Proportional to 12,694.87, 17,518.70 and 7,029.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,694.87 : 17,518.70 = 7,029.50 : x
2. Step 2: Convert to fraction form
   12,694.87/17,518.70 = 7,029.50/x
3. Step 3: Cross multiply
   12,694.87x = 17,518.70 × 7,029.50
4. Step 4: Simplify right side
   12,694.87x = 123,147,666.50
5. Step 5: Solve for x
   x = 123,147,666.50/12,694.87
6. Step 6: Final answer
   x = 9,700.59