Finding the Fourth Proportional to 8,680.63, 13,019.31 and 4,233.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,680.63 : 13,019.31 = 4,233.84 : x
2. Step 2: Convert to fraction form
   8,680.63/13,019.31 = 4,233.84/x
3. Step 3: Cross multiply
   8,680.63x = 13,019.31 × 4,233.84
4. Step 4: Simplify right side
   8,680.63x = 55,121,675.45
5. Step 5: Solve for x
   x = 55,121,675.45/8,680.63
6. Step 6: Final answer
   x = 6,349.96