Finding the Fourth Proportional to 7,154.12, 9,871.86 and 4,323.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,154.12 : 9,871.86 = 4,323.20 : x
2. Step 2: Convert to fraction form
   7,154.12/9,871.86 = 4,323.20/x
3. Step 3: Cross multiply
   7,154.12x = 9,871.86 × 4,323.20
4. Step 4: Simplify right side
   7,154.12x = 42,678,025.15
5. Step 5: Solve for x
   x = 42,678,025.15/7,154.12
6. Step 6: Final answer
   x = 5,965.52