Finding the Fourth Proportional to 8,141.60, 12,196.20 and 4,437.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,141.60 : 12,196.20 = 4,437.20 : x
2. Step 2: Convert to fraction form
   8,141.60/12,196.20 = 4,437.20/x
3. Step 3: Cross multiply
   8,141.60x = 12,196.20 × 4,437.20
4. Step 4: Simplify right side
   8,141.60x = 54,116,978.64
5. Step 5: Solve for x
   x = 54,116,978.64/8,141.60
6. Step 6: Final answer
   x = 6,646.97