Finding the Fourth Proportional to 21,078.08, 29,093.82 and 13,913.22

Step by Step Solution

1. Step 1: Write the proportion equation
   21,078.08 : 29,093.82 = 13,913.22 : x
2. Step 2: Convert to fraction form
   21,078.08/29,093.82 = 13,913.22/x
3. Step 3: Cross multiply
   21,078.08x = 29,093.82 × 13,913.22
4. Step 4: Simplify right side
   21,078.08x = 404,788,718.30
5. Step 5: Solve for x
   x = 404,788,718.30/21,078.08
6. Step 6: Final answer
   x = 19,204.25