Finding the Fourth Proportional to 12,718.17, 17,551.43 and 7,683.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,718.17 : 17,551.43 = 7,683.29 : x
2. Step 2: Convert to fraction form
   12,718.17/17,551.43 = 7,683.29/x
3. Step 3: Cross multiply
   12,718.17x = 17,551.43 × 7,683.29
4. Step 4: Simplify right side
   12,718.17x = 134,852,738.28
5. Step 5: Solve for x
   x = 134,852,738.28/12,718.17
6. Step 6: Final answer
   x = 10,603.15