Finding the Fourth Proportional to 9,947.22, 14,920.86 and 3,021.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,947.22 : 14,920.86 = 3,021.72 : x
2. Step 2: Convert to fraction form
   9,947.22/14,920.86 = 3,021.72/x
3. Step 3: Cross multiply
   9,947.22x = 14,920.86 × 3,021.72
4. Step 4: Simplify right side
   9,947.22x = 45,086,661.08
5. Step 5: Solve for x
   x = 45,086,661.08/9,947.22
6. Step 6: Final answer
   x = 4,532.59