Finding the Fourth Proportional to 13,071.26, 19,601.42 and 5,172.54

Step by Step Solution

1. Step 1: Write the proportion equation
   13,071.26 : 19,601.42 = 5,172.54 : x
2. Step 2: Convert to fraction form
   13,071.26/19,601.42 = 5,172.54/x
3. Step 3: Cross multiply
   13,071.26x = 19,601.42 × 5,172.54
4. Step 4: Simplify right side
   13,071.26x = 101,389,103.14
5. Step 5: Solve for x
   x = 101,389,103.14/13,071.26
6. Step 6: Final answer
   x = 7,756.65