Finding the Fourth Proportional to 21,388.56, 32,010.56 and 15,272.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,388.56 : 32,010.56 = 15,272.24 : x
2. Step 2: Convert to fraction form
   21,388.56/32,010.56 = 15,272.24/x
3. Step 3: Cross multiply
   21,388.56x = 32,010.56 × 15,272.24
4. Step 4: Simplify right side
   21,388.56x = 488,872,954.85
5. Step 5: Solve for x
   x = 488,872,954.85/21,388.56
6. Step 6: Final answer
   x = 22,856.75