Finding the Fourth Proportional to 7,404.28, 11,091.76 and 3,889.01

Step by Step Solution

1. Step 1: Write the proportion equation
   7,404.28 : 11,091.76 = 3,889.01 : x
2. Step 2: Convert to fraction form
   7,404.28/11,091.76 = 3,889.01/x
3. Step 3: Cross multiply
   7,404.28x = 11,091.76 × 3,889.01
4. Step 4: Simplify right side
   7,404.28x = 43,135,965.56
5. Step 5: Solve for x
   x = 43,135,965.56/7,404.28
6. Step 6: Final answer
   x = 5,825.82