Finding the Fourth Proportional to 3,978.18, 5,487.12 and 3,232.14

Step by Step Solution

1. Step 1: Write the proportion equation
   3,978.18 : 5,487.12 = 3,232.14 : x
2. Step 2: Convert to fraction form
   3,978.18/5,487.12 = 3,232.14/x
3. Step 3: Cross multiply
   3,978.18x = 5,487.12 × 3,232.14
4. Step 4: Simplify right side
   3,978.18x = 17,735,140.04
5. Step 5: Solve for x
   x = 17,735,140.04/3,978.18
6. Step 6: Final answer
   x = 4,458.10