Finding the Fourth Proportional to 5,103.45, 7,643.82 and 2,910.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,103.45 : 7,643.82 = 2,910.78 : x
2. Step 2: Convert to fraction form
   5,103.45/7,643.82 = 2,910.78/x
3. Step 3: Cross multiply
   5,103.45x = 7,643.82 × 2,910.78
4. Step 4: Simplify right side
   5,103.45x = 22,249,478.38
5. Step 5: Solve for x
   x = 22,249,478.38/5,103.45
6. Step 6: Final answer
   x = 4,359.69