Finding the Fourth Proportional to 10,185.11, 14,055.62 and 5,709.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,185.11 : 14,055.62 = 5,709.86 : x
2. Step 2: Convert to fraction form
   10,185.11/14,055.62 = 5,709.86/x
3. Step 3: Cross multiply
   10,185.11x = 14,055.62 × 5,709.86
4. Step 4: Simplify right side
   10,185.11x = 80,255,523.59
5. Step 5: Solve for x
   x = 80,255,523.59/10,185.11
6. Step 6: Final answer
   x = 7,879.70