Finding the Fourth Proportional to 15,235.49, 21,025.98 and 8,522.28

Step by Step Solution

1. Step 1: Write the proportion equation
   15,235.49 : 21,025.98 = 8,522.28 : x
2. Step 2: Convert to fraction form
   15,235.49/21,025.98 = 8,522.28/x
3. Step 3: Cross multiply
   15,235.49x = 21,025.98 × 8,522.28
4. Step 4: Simplify right side
   15,235.49x = 179,189,288.83
5. Step 5: Solve for x
   x = 179,189,288.83/15,235.49
6. Step 6: Final answer
   x = 11,761.31