Finding the Fourth Proportional to 12,734.89, 19,103.18 and 3,374.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,734.89 : 19,103.18 = 3,374.78 : x
2. Step 2: Convert to fraction form
   12,734.89/19,103.18 = 3,374.78/x
3. Step 3: Cross multiply
   12,734.89x = 19,103.18 × 3,374.78
4. Step 4: Simplify right side
   12,734.89x = 64,468,917.41
5. Step 5: Solve for x
   x = 64,468,917.41/12,734.89
6. Step 6: Final answer
   x = 5,062.39