Finding the Fourth Proportional to 7,047.91, 9,726.43 and 3,904.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,047.91 : 9,726.43 = 3,904.10 : x
2. Step 2: Convert to fraction form
   7,047.91/9,726.43 = 3,904.10/x
3. Step 3: Cross multiply
   7,047.91x = 9,726.43 × 3,904.10
4. Step 4: Simplify right side
   7,047.91x = 37,972,916.49
5. Step 5: Solve for x
   x = 37,972,916.49/7,047.91
6. Step 6: Final answer
   x = 5,387.83