Finding the Fourth Proportional to 7,153.89, 9,872.46 and 3,967.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,153.89 : 9,872.46 = 3,967.25 : x
2. Step 2: Convert to fraction form
   7,153.89/9,872.46 = 3,967.25/x
3. Step 3: Cross multiply
   7,153.89x = 9,872.46 × 3,967.25
4. Step 4: Simplify right side
   7,153.89x = 39,166,539.71
5. Step 5: Solve for x
   x = 39,166,539.71/7,153.89
6. Step 6: Final answer
   x = 5,474.86