Finding the Fourth Proportional to 9,821.50, 13,550.25 and 5,572.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,821.50 : 13,550.25 = 5,572.06 : x
2. Step 2: Convert to fraction form
   9,821.50/13,550.25 = 5,572.06/x
3. Step 3: Cross multiply
   9,821.50x = 13,550.25 × 5,572.06
4. Step 4: Simplify right side
   9,821.50x = 75,502,806.02
5. Step 5: Solve for x
   x = 75,502,806.02/9,821.50
6. Step 6: Final answer
   x = 7,687.50