Finding the Fourth Proportional to 10,707.80, 16,053.73 and 5,155.93

Step by Step Solution

1. Step 1: Write the proportion equation
   10,707.80 : 16,053.73 = 5,155.93 : x
2. Step 2: Convert to fraction form
   10,707.80/16,053.73 = 5,155.93/x
3. Step 3: Cross multiply
   10,707.80x = 16,053.73 × 5,155.93
4. Step 4: Simplify right side
   10,707.80x = 82,771,908.12
5. Step 5: Solve for x
   x = 82,771,908.12/10,707.80
6. Step 6: Final answer
   x = 7,730.06