Finding the Fourth Proportional to 21,826.06, 30,112.63 and 13,325.11

Step by Step Solution

1. Step 1: Write the proportion equation
   21,826.06 : 30,112.63 = 13,325.11 : x
2. Step 2: Convert to fraction form
   21,826.06/30,112.63 = 13,325.11/x
3. Step 3: Cross multiply
   21,826.06x = 30,112.63 × 13,325.11
4. Step 4: Simplify right side
   21,826.06x = 401,253,998.54
5. Step 5: Solve for x
   x = 401,253,998.54/21,826.06
6. Step 6: Final answer
   x = 18,384.17