Finding the Fourth Proportional to 8,128.42, 12,196.66 and 3,748.96

Step by Step Solution

1. Step 1: Write the proportion equation
   8,128.42 : 12,196.66 = 3,748.96 : x
2. Step 2: Convert to fraction form
   8,128.42/12,196.66 = 3,748.96/x
3. Step 3: Cross multiply
   8,128.42x = 12,196.66 × 3,748.96
4. Step 4: Simplify right side
   8,128.42x = 45,724,790.47
5. Step 5: Solve for x
   x = 45,724,790.47/8,128.42
6. Step 6: Final answer
   x = 5,625.30