Finding the Fourth Proportional to 12,917.83, 19,369.46 and 4,480.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,917.83 : 19,369.46 = 4,480.38 : x
2. Step 2: Convert to fraction form
   12,917.83/19,369.46 = 4,480.38/x
3. Step 3: Cross multiply
   12,917.83x = 19,369.46 × 4,480.38
4. Step 4: Simplify right side
   12,917.83x = 86,782,552.40
5. Step 5: Solve for x
   x = 86,782,552.40/12,917.83
6. Step 6: Final answer
   x = 6,718.05