Finding the Fourth Proportional to 13,171.77, 19,760.78 and 3,812.01

Step by Step Solution

1. Step 1: Write the proportion equation
   13,171.77 : 19,760.78 = 3,812.01 : x
2. Step 2: Convert to fraction form
   13,171.77/19,760.78 = 3,812.01/x
3. Step 3: Cross multiply
   13,171.77x = 19,760.78 × 3,812.01
4. Step 4: Simplify right side
   13,171.77x = 75,328,271.91
5. Step 5: Solve for x
   x = 75,328,271.91/13,171.77
6. Step 6: Final answer
   x = 5,718.92