Finding the Fourth Proportional to 21,453.92, 32,172.56 and 7,411.36

Step by Step Solution

1. Step 1: Write the proportion equation
   21,453.92 : 32,172.56 = 7,411.36 : x
2. Step 2: Convert to fraction form
   21,453.92/32,172.56 = 7,411.36/x
3. Step 3: Cross multiply
   21,453.92x = 32,172.56 × 7,411.36
4. Step 4: Simplify right side
   21,453.92x = 238,442,424.28
5. Step 5: Solve for x
   x = 238,442,424.28/21,453.92
6. Step 6: Final answer
   x = 11,114.17