Finding the Fourth Proportional to 10,705.90, 14,959.10 and 10,705.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,705.90 : 14,959.10 = 10,705.90 : x
2. Step 2: Convert to fraction form
   10,705.90/14,959.10 = 10,705.90/x
3. Step 3: Cross multiply
   10,705.90x = 14,959.10 × 10,705.90
4. Step 4: Simplify right side
   10,705.90x = 160,150,628.69
5. Step 5: Solve for x
   x = 160,150,628.69/10,705.90
6. Step 6: Final answer
   x = 14,959.10