Finding the Fourth Proportional to 7,048.72, 9,726.78 and 3,904.84

Step by Step Solution

1. Step 1: Write the proportion equation
   7,048.72 : 9,726.78 = 3,904.84 : x
2. Step 2: Convert to fraction form
   7,048.72/9,726.78 = 3,904.84/x
3. Step 3: Cross multiply
   7,048.72x = 9,726.78 × 3,904.84
4. Step 4: Simplify right side
   7,048.72x = 37,981,519.62
5. Step 5: Solve for x
   x = 37,981,519.62/7,048.72
6. Step 6: Final answer
   x = 5,388.43