Finding the Fourth Proportional to 12,151.16, 18,230.01 and 3,831.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,151.16 : 18,230.01 = 3,831.50 : x
2. Step 2: Convert to fraction form
   12,151.16/18,230.01 = 3,831.50/x
3. Step 3: Cross multiply
   12,151.16x = 18,230.01 × 3,831.50
4. Step 4: Simplify right side
   12,151.16x = 69,848,283.32
5. Step 5: Solve for x
   x = 69,848,283.32/12,151.16
6. Step 6: Final answer
   x = 5,748.28