Finding the Fourth Proportional to 7,015.72, 9,681.54 and 3,871.84

Step by Step Solution

1. Step 1: Write the proportion equation
   7,015.72 : 9,681.54 = 3,871.84 : x
2. Step 2: Convert to fraction form
   7,015.72/9,681.54 = 3,871.84/x
3. Step 3: Cross multiply
   7,015.72x = 9,681.54 × 3,871.84
4. Step 4: Simplify right side
   7,015.72x = 37,485,373.83
5. Step 5: Solve for x
   x = 37,485,373.83/7,015.72
6. Step 6: Final answer
   x = 5,343.05