Finding the Fourth Proportional to 13,250.79, 19,871.33 and 3,888.41

Step by Step Solution

1. Step 1: Write the proportion equation
   13,250.79 : 19,871.33 = 3,888.41 : x
2. Step 2: Convert to fraction form
   13,250.79/19,871.33 = 3,888.41/x
3. Step 3: Cross multiply
   13,250.79x = 19,871.33 × 3,888.41
4. Step 4: Simplify right side
   13,250.79x = 77,267,759.49
5. Step 5: Solve for x
   x = 77,267,759.49/13,250.79
6. Step 6: Final answer
   x = 5,831.18