Finding the Fourth Proportional to 7,016.40, 10,527.84 and 3,120.30

Step by Step Solution

1. Step 1: Write the proportion equation
   7,016.40 : 10,527.84 = 3,120.30 : x
2. Step 2: Convert to fraction form
   7,016.40/10,527.84 = 3,120.30/x
3. Step 3: Cross multiply
   7,016.40x = 10,527.84 × 3,120.30
4. Step 4: Simplify right side
   7,016.40x = 32,850,019.15
5. Step 5: Solve for x
   x = 32,850,019.15/7,016.40
6. Step 6: Final answer
   x = 4,681.89