Finding the Fourth Proportional to 7,047.90, 9,726.10 and 3,904.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,047.90 : 9,726.10 = 3,904.10 : x
2. Step 2: Convert to fraction form
   7,047.90/9,726.10 = 3,904.10/x
3. Step 3: Cross multiply
   7,047.90x = 9,726.10 × 3,904.10
4. Step 4: Simplify right side
   7,047.90x = 37,971,667.01
5. Step 5: Solve for x
   x = 37,971,667.01/7,047.90
6. Step 6: Final answer
   x = 5,387.66