Finding the Fourth Proportional to 12,605.30, 17,395.31 and 7,017.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,605.30 : 17,395.31 = 7,017.62 : x
2. Step 2: Convert to fraction form
   12,605.30/17,395.31 = 7,017.62/x
3. Step 3: Cross multiply
   12,605.30x = 17,395.31 × 7,017.62
4. Step 4: Simplify right side
   12,605.30x = 122,073,675.36
5. Step 5: Solve for x
   x = 122,073,675.36/12,605.30
6. Step 6: Final answer
   x = 9,684.31