Finding the Fourth Proportional to 10,839.72, 16,253.76 and 5,572.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,839.72 : 16,253.76 = 5,572.56 : x
2. Step 2: Convert to fraction form
   10,839.72/16,253.76 = 5,572.56/x
3. Step 3: Cross multiply
   10,839.72x = 16,253.76 × 5,572.56
4. Step 4: Simplify right side
   10,839.72x = 90,575,052.83
5. Step 5: Solve for x
   x = 90,575,052.83/10,839.72
6. Step 6: Final answer
   x = 8,355.85