Finding the Fourth Proportional to 8,142.48, 12,206.16 and 2,945.52

Step by Step Solution

1. Step 1: Write the proportion equation
   8,142.48 : 12,206.16 = 2,945.52 : x
2. Step 2: Convert to fraction form
   8,142.48/12,206.16 = 2,945.52/x
3. Step 3: Cross multiply
   8,142.48x = 12,206.16 × 2,945.52
4. Step 4: Simplify right side
   8,142.48x = 35,953,488.40
5. Step 5: Solve for x
   x = 35,953,488.40/8,142.48
6. Step 6: Final answer
   x = 4,415.55