Finding the Fourth Proportional to 12,740.60, 19,111.80 and 3,380.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,740.60 : 19,111.80 = 3,380.54 : x
2. Step 2: Convert to fraction form
   12,740.60/19,111.80 = 3,380.54/x
3. Step 3: Cross multiply
   12,740.60x = 19,111.80 × 3,380.54
4. Step 4: Simplify right side
   12,740.60x = 64,608,204.37
5. Step 5: Solve for x
   x = 64,608,204.37/12,740.60
6. Step 6: Final answer
   x = 5,071.05