Finding the Fourth Proportional to 21,054.27, 29,054.71 and 11,622.63

Step by Step Solution

1. Step 1: Write the proportion equation
   21,054.27 : 29,054.71 = 11,622.63 : x
2. Step 2: Convert to fraction form
   21,054.27/29,054.71 = 11,622.63/x
3. Step 3: Cross multiply
   21,054.27x = 29,054.71 × 11,622.63
4. Step 4: Simplify right side
   21,054.27x = 337,691,969.76
5. Step 5: Solve for x
   x = 337,691,969.76/21,054.27
6. Step 6: Final answer
   x = 16,039.12