Finding the Fourth Proportional to 5,003.07, 7,509.15 and 2,665.03

Step by Step Solution

1. Step 1: Write the proportion equation
   5,003.07 : 7,509.15 = 2,665.03 : x
2. Step 2: Convert to fraction form
   5,003.07/7,509.15 = 2,665.03/x
3. Step 3: Cross multiply
   5,003.07x = 7,509.15 × 2,665.03
4. Step 4: Simplify right side
   5,003.07x = 20,012,110.02
5. Step 5: Solve for x
   x = 20,012,110.02/5,003.07
6. Step 6: Final answer
   x = 3,999.97