Finding the Fourth Proportional to 9,086.58, 13,622.99 and 4,407.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,086.58 : 13,622.99 = 4,407.21 : x
2. Step 2: Convert to fraction form
   9,086.58/13,622.99 = 4,407.21/x
3. Step 3: Cross multiply
   9,086.58x = 13,622.99 × 4,407.21
4. Step 4: Simplify right side
   9,086.58x = 60,039,355.72
5. Step 5: Solve for x
   x = 60,039,355.72/9,086.58
6. Step 6: Final answer
   x = 6,607.48