Finding the Fourth Proportional to 13,065.50, 19,601.51 and 3,831.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,065.50 : 19,601.51 = 3,831.50 : x
2. Step 2: Convert to fraction form
   13,065.50/19,601.51 = 3,831.50/x
3. Step 3: Cross multiply
   13,065.50x = 19,601.51 × 3,831.50
4. Step 4: Simplify right side
   13,065.50x = 75,103,166.41
5. Step 5: Solve for x
   x = 75,103,166.41/13,065.50
6. Step 6: Final answer
   x = 5,748.20