Finding the Fourth Proportional to 7,019.76, 9,686.88 and 3,875.76

Step by Step Solution

1. Step 1: Write the proportion equation
   7,019.76 : 9,686.88 = 3,875.76 : x
2. Step 2: Convert to fraction form
   7,019.76/9,686.88 = 3,875.76/x
3. Step 3: Cross multiply
   7,019.76x = 9,686.88 × 3,875.76
4. Step 4: Simplify right side
   7,019.76x = 37,544,022.03
5. Step 5: Solve for x
   x = 37,544,022.03/7,019.76
6. Step 6: Final answer
   x = 5,348.33