Finding the Fourth Proportional to 6,456.17, 8,908.18 and 4,221.33

Step by Step Solution

1. Step 1: Write the proportion equation
   6,456.17 : 8,908.18 = 4,221.33 : x
2. Step 2: Convert to fraction form
   6,456.17/8,908.18 = 4,221.33/x
3. Step 3: Cross multiply
   6,456.17x = 8,908.18 × 4,221.33
4. Step 4: Simplify right side
   6,456.17x = 37,604,373.63
5. Step 5: Solve for x
   x = 37,604,373.63/6,456.17
6. Step 6: Final answer
   x = 5,824.56