Finding the Fourth Proportional to 12,619.14, 17,415 and 7,315.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,619.14 : 17,415 = 7,315.62 : x
2. Step 2: Convert to fraction form
   12,619.14/17,415 = 7,315.62/x
3. Step 3: Cross multiply
   12,619.14x = 17,415 × 7,315.62
4. Step 4: Simplify right side
   12,619.14x = 127,401,522.30
5. Step 5: Solve for x
   x = 127,401,522.30/12,619.14
6. Step 6: Final answer
   x = 10,095.90