Finding the Fourth Proportional to 5,831.48, 8,004.38 and 5,187.91

Step by Step Solution

1. Step 1: Write the proportion equation
   5,831.48 : 8,004.38 = 5,187.91 : x
2. Step 2: Convert to fraction form
   5,831.48/8,004.38 = 5,187.91/x
3. Step 3: Cross multiply
   5,831.48x = 8,004.38 × 5,187.91
4. Step 4: Simplify right side
   5,831.48x = 41,526,003.05
5. Step 5: Solve for x
   x = 41,526,003.05/5,831.48
6. Step 6: Final answer
   x = 7,121.01