Finding the Fourth Proportional to 7,015.89, 9,681.88 and 3,872.08

Step by Step Solution

1. Step 1: Write the proportion equation
   7,015.89 : 9,681.88 = 3,872.08 : x
2. Step 2: Convert to fraction form
   7,015.89/9,681.88 = 3,872.08/x
3. Step 3: Cross multiply
   7,015.89x = 9,681.88 × 3,872.08
4. Step 4: Simplify right side
   7,015.89x = 37,489,023.59
5. Step 5: Solve for x
   x = 37,489,023.59/7,015.89
6. Step 6: Final answer
   x = 5,343.44