Finding the Fourth Proportional to 12,874.86, 19,317.96 and 5,480.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,874.86 : 19,317.96 = 5,480.10 : x
2. Step 2: Convert to fraction form
   12,874.86/19,317.96 = 5,480.10/x
3. Step 3: Cross multiply
   12,874.86x = 19,317.96 × 5,480.10
4. Step 4: Simplify right side
   12,874.86x = 105,864,352.60
5. Step 5: Solve for x
   x = 105,864,352.60/12,874.86
6. Step 6: Final answer
   x = 8,222.56