Finding the Fourth Proportional to 5,007.98, 7,509.69 and 2,667.39

Step by Step Solution

1. Step 1: Write the proportion equation
   5,007.98 : 7,509.69 = 2,667.39 : x
2. Step 2: Convert to fraction form
   5,007.98/7,509.69 = 2,667.39/x
3. Step 3: Cross multiply
   5,007.98x = 7,509.69 × 2,667.39
4. Step 4: Simplify right side
   5,007.98x = 20,031,272.01
5. Step 5: Solve for x
   x = 20,031,272.01/5,007.98
6. Step 6: Final answer
   x = 3,999.87