Finding the Fourth Proportional to 12,963.43, 19,447.17 and 4,641.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,963.43 : 19,447.17 = 4,641.69 : x
2. Step 2: Convert to fraction form
   12,963.43/19,447.17 = 4,641.69/x
3. Step 3: Cross multiply
   12,963.43x = 19,447.17 × 4,641.69
4. Step 4: Simplify right side
   12,963.43x = 90,267,734.52
5. Step 5: Solve for x
   x = 90,267,734.52/12,963.43
6. Step 6: Final answer
   x = 6,963.26