Finding the Fourth Proportional to 15,009.50, 22,522.25 and 8,436.15

Step by Step Solution

1. Step 1: Write the proportion equation
   15,009.50 : 22,522.25 = 8,436.15 : x
2. Step 2: Convert to fraction form
   15,009.50/22,522.25 = 8,436.15/x
3. Step 3: Cross multiply
   15,009.50x = 22,522.25 × 8,436.15
4. Step 4: Simplify right side
   15,009.50x = 190,001,100.43
5. Step 5: Solve for x
   x = 190,001,100.43/15,009.50
6. Step 6: Final answer
   x = 12,658.72