Finding the Fourth Proportional to 7,155.86, 10,736.73 and 3,865.07

Step by Step Solution

1. Step 1: Write the proportion equation
   7,155.86 : 10,736.73 = 3,865.07 : x
2. Step 2: Convert to fraction form
   7,155.86/10,736.73 = 3,865.07/x
3. Step 3: Cross multiply
   7,155.86x = 10,736.73 × 3,865.07
4. Step 4: Simplify right side
   7,155.86x = 41,498,159.34
5. Step 5: Solve for x
   x = 41,498,159.34/7,155.86
6. Step 6: Final answer
   x = 5,799.19