Finding the Fourth Proportional to 10,891.01, 16,327.72 and 4,224.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,891.01 : 16,327.72 = 4,224.06 : x
2. Step 2: Convert to fraction form
   10,891.01/16,327.72 = 4,224.06/x
3. Step 3: Cross multiply
   10,891.01x = 16,327.72 × 4,224.06
4. Step 4: Simplify right side
   10,891.01x = 68,969,317.92
5. Step 5: Solve for x
   x = 68,969,317.92/10,891.01
6. Step 6: Final answer
   x = 6,332.68