Finding the Fourth Proportional to 5,499.36, 7,587.81 and 3,109.38

Step by Step Solution

1. Step 1: Write the proportion equation
   5,499.36 : 7,587.81 = 3,109.38 : x
2. Step 2: Convert to fraction form
   5,499.36/7,587.81 = 3,109.38/x
3. Step 3: Cross multiply
   5,499.36x = 7,587.81 × 3,109.38
4. Step 4: Simplify right side
   5,499.36x = 23,593,384.66
5. Step 5: Solve for x
   x = 23,593,384.66/5,499.36
6. Step 6: Final answer
   x = 4,290.21