Finding the Fourth Proportional to 3,340.78, 5,016.86 and 2,784.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,340.78 : 5,016.86 = 2,784.92 : x
2. Step 2: Convert to fraction form
   3,340.78/5,016.86 = 2,784.92/x
3. Step 3: Cross multiply
   3,340.78x = 5,016.86 × 2,784.92
4. Step 4: Simplify right side
   3,340.78x = 13,971,535.63
5. Step 5: Solve for x
   x = 13,971,535.63/3,340.78
6. Step 6: Final answer
   x = 4,182.12