Finding the Fourth Proportional to 21,454.72, 32,180.52 and 7,223.28

Step by Step Solution

1. Step 1: Write the proportion equation
   21,454.72 : 32,180.52 = 7,223.28 : x
2. Step 2: Convert to fraction form
   21,454.72/32,180.52 = 7,223.28/x
3. Step 3: Cross multiply
   21,454.72x = 32,180.52 × 7,223.28
4. Step 4: Simplify right side
   21,454.72x = 232,448,906.51
5. Step 5: Solve for x
   x = 232,448,906.51/21,454.72
6. Step 6: Final answer
   x = 10,834.39