Finding the Fourth Proportional to 8,627.50, 12,938.52 and 5,721.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,627.50 : 12,938.52 = 5,721.22 : x
2. Step 2: Convert to fraction form
   8,627.50/12,938.52 = 5,721.22/x
3. Step 3: Cross multiply
   8,627.50x = 12,938.52 × 5,721.22
4. Step 4: Simplify right side
   8,627.50x = 74,024,119.39
5. Step 5: Solve for x
   x = 74,024,119.39/8,627.50
6. Step 6: Final answer
   x = 8,580.02