Finding the Fourth Proportional to 5,061.12, 6,984.72 and 3,072.24

Step by Step Solution

1. Step 1: Write the proportion equation
   5,061.12 : 6,984.72 = 3,072.24 : x
2. Step 2: Convert to fraction form
   5,061.12/6,984.72 = 3,072.24/x
3. Step 3: Cross multiply
   5,061.12x = 6,984.72 × 3,072.24
4. Step 4: Simplify right side
   5,061.12x = 21,458,736.17
5. Step 5: Solve for x
   x = 21,458,736.17/5,061.12
6. Step 6: Final answer
   x = 4,239.92