Finding the Fourth Proportional to 7,005.12, 9,667.98 and 4,020.36

Step by Step Solution

1. Step 1: Write the proportion equation
   7,005.12 : 9,667.98 = 4,020.36 : x
2. Step 2: Convert to fraction form
   7,005.12/9,667.98 = 4,020.36/x
3. Step 3: Cross multiply
   7,005.12x = 9,667.98 × 4,020.36
4. Step 4: Simplify right side
   7,005.12x = 38,868,760.07
5. Step 5: Solve for x
   x = 38,868,760.07/7,005.12
6. Step 6: Final answer
   x = 5,548.62