Finding the Fourth Proportional to 12,841.31, 19,260.43 and 3,480.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,841.31 : 19,260.43 = 3,480.75 : x
2. Step 2: Convert to fraction form
   12,841.31/19,260.43 = 3,480.75/x
3. Step 3: Cross multiply
   12,841.31x = 19,260.43 × 3,480.75
4. Step 4: Simplify right side
   12,841.31x = 67,040,733.02
5. Step 5: Solve for x
   x = 67,040,733.02/12,841.31
6. Step 6: Final answer
   x = 5,220.71