Finding the Fourth Proportional to 10,664.10, 14,910.30 and 10,664.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,664.10 : 14,910.30 = 10,664.10 : x
2. Step 2: Convert to fraction form
   10,664.10/14,910.30 = 10,664.10/x
3. Step 3: Cross multiply
   10,664.10x = 14,910.30 × 10,664.10
4. Step 4: Simplify right side
   10,664.10x = 159,004,930.23
5. Step 5: Solve for x
   x = 159,004,930.23/10,664.10
6. Step 6: Final answer
   x = 14,910.30