Finding the Fourth Proportional to 13,301.36, 19,957.91 and 6,974.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,301.36 : 19,957.91 = 6,974.72 : x
2. Step 2: Convert to fraction form
   13,301.36/19,957.91 = 6,974.72/x
3. Step 3: Cross multiply
   13,301.36x = 19,957.91 × 6,974.72
4. Step 4: Simplify right side
   13,301.36x = 139,200,901.37
5. Step 5: Solve for x
   x = 139,200,901.37/13,301.36
6. Step 6: Final answer
   x = 10,465.17