Finding the Fourth Proportional to 8,128.44, 12,180.88 and 3,441.98

Step by Step Solution

1. Step 1: Write the proportion equation
   8,128.44 : 12,180.88 = 3,441.98 : x
2. Step 2: Convert to fraction form
   8,128.44/12,180.88 = 3,441.98/x
3. Step 3: Cross multiply
   8,128.44x = 12,180.88 × 3,441.98
4. Step 4: Simplify right side
   8,128.44x = 41,926,345.34
5. Step 5: Solve for x
   x = 41,926,345.34/8,128.44
6. Step 6: Final answer
   x = 5,157.98