Finding the Fourth Proportional to 10,185.51, 14,055.89 and 5,709.26

Step by Step Solution

1. Step 1: Write the proportion equation
   10,185.51 : 14,055.89 = 5,709.26 : x
2. Step 2: Convert to fraction form
   10,185.51/14,055.89 = 5,709.26/x
3. Step 3: Cross multiply
   10,185.51x = 14,055.89 × 5,709.26
4. Step 4: Simplify right side
   10,185.51x = 80,248,631.72
5. Step 5: Solve for x
   x = 80,248,631.72/10,185.51
6. Step 6: Final answer
   x = 7,878.71