Finding the Fourth Proportional to 7,153.94, 9,872.55 and 3,967.37

Step by Step Solution

1. Step 1: Write the proportion equation
   7,153.94 : 9,872.55 = 3,967.37 : x
2. Step 2: Convert to fraction form
   7,153.94/9,872.55 = 3,967.37/x
3. Step 3: Cross multiply
   7,153.94x = 9,872.55 × 3,967.37
4. Step 4: Simplify right side
   7,153.94x = 39,168,009.33
5. Step 5: Solve for x
   x = 39,168,009.33/7,153.94
6. Step 6: Final answer
   x = 5,475.03