Finding the Fourth Proportional to 8,901.89, 12,273.44 and 5,709.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,901.89 : 12,273.44 = 5,709.56 : x
2. Step 2: Convert to fraction form
   8,901.89/12,273.44 = 5,709.56/x
3. Step 3: Cross multiply
   8,901.89x = 12,273.44 × 5,709.56
4. Step 4: Simplify right side
   8,901.89x = 70,075,880.72
5. Step 5: Solve for x
   x = 70,075,880.72/8,901.89
6. Step 6: Final answer
   x = 7,872.02