Finding the Fourth Proportional to 13,271.58, 19,904.36 and 3,912.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,271.58 : 19,904.36 = 3,912.23 : x
2. Step 2: Convert to fraction form
   13,271.58/19,904.36 = 3,912.23/x
3. Step 3: Cross multiply
   13,271.58x = 19,904.36 × 3,912.23
4. Step 4: Simplify right side
   13,271.58x = 77,870,464.52
5. Step 5: Solve for x
   x = 77,870,464.52/13,271.58
6. Step 6: Final answer
   x = 5,867.46