Finding the Fourth Proportional to 8,146.91, 12,221.33 and 2,880.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,146.91 : 12,221.33 = 2,880.82 : x
2. Step 2: Convert to fraction form
   8,146.91/12,221.33 = 2,880.82/x
3. Step 3: Cross multiply
   8,146.91x = 12,221.33 × 2,880.82
4. Step 4: Simplify right side
   8,146.91x = 35,207,503.34
5. Step 5: Solve for x
   x = 35,207,503.34/8,146.91
6. Step 6: Final answer
   x = 4,321.58