Finding the Fourth Proportional to 5,300.30, 7,951.97 and 2,138.74

Step by Step Solution

1. Step 1: Write the proportion equation
   5,300.30 : 7,951.97 = 2,138.74 : x
2. Step 2: Convert to fraction form
   5,300.30/7,951.97 = 2,138.74/x
3. Step 3: Cross multiply
   5,300.30x = 7,951.97 × 2,138.74
4. Step 4: Simplify right side
   5,300.30x = 17,007,181.78
5. Step 5: Solve for x
   x = 17,007,181.78/5,300.30
6. Step 6: Final answer
   x = 3,208.72