Finding the Fourth Proportional to 10,663.10, 14,908.90 and 10,663.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,663.10 : 14,908.90 = 10,663.10 : x
2. Step 2: Convert to fraction form
   10,663.10/14,908.90 = 10,663.10/x
3. Step 3: Cross multiply
   10,663.10x = 14,908.90 × 10,663.10
4. Step 4: Simplify right side
   10,663.10x = 158,975,091.59
5. Step 5: Solve for x
   x = 158,975,091.59/10,663.10
6. Step 6: Final answer
   x = 14,908.90