Finding the Fourth Proportional to 10,805.20, 16,195.24 and 7,106.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,805.20 : 16,195.24 = 7,106.72 : x
2. Step 2: Convert to fraction form
   10,805.20/16,195.24 = 7,106.72/x
3. Step 3: Cross multiply
   10,805.20x = 16,195.24 × 7,106.72
4. Step 4: Simplify right side
   10,805.20x = 115,095,036.01
5. Step 5: Solve for x
   x = 115,095,036.01/10,805.20
6. Step 6: Final answer
   x = 10,651.82