Finding the Fourth Proportional to 21,626.10, 29,826.72 and 14,910.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,626.10 : 29,826.72 = 14,910.18 : x
2. Step 2: Convert to fraction form
   21,626.10/29,826.72 = 14,910.18/x
3. Step 3: Cross multiply
   21,626.10x = 29,826.72 × 14,910.18
4. Step 4: Simplify right side
   21,626.10x = 444,721,764.01
5. Step 5: Solve for x
   x = 444,721,764.01/21,626.10
6. Step 6: Final answer
   x = 20,564.12