Finding the Fourth Proportional to 11,010.01, 16,505.29 and 8,424.49

Step by Step Solution

1. Step 1: Write the proportion equation
   11,010.01 : 16,505.29 = 8,424.49 : x
2. Step 2: Convert to fraction form
   11,010.01/16,505.29 = 8,424.49/x
3. Step 3: Cross multiply
   11,010.01x = 16,505.29 × 8,424.49
4. Step 4: Simplify right side
   11,010.01x = 139,048,650.55
5. Step 5: Solve for x
   x = 139,048,650.55/11,010.01
6. Step 6: Final answer
   x = 12,629.29