Finding the Fourth Proportional to 10,128.12, 13,975.29 and 5,651.97

Step by Step Solution

1. Step 1: Write the proportion equation
   10,128.12 : 13,975.29 = 5,651.97 : x
2. Step 2: Convert to fraction form
   10,128.12/13,975.29 = 5,651.97/x
3. Step 3: Cross multiply
   10,128.12x = 13,975.29 × 5,651.97
4. Step 4: Simplify right side
   10,128.12x = 78,987,919.82
5. Step 5: Solve for x
   x = 78,987,919.82/10,128.12
6. Step 6: Final answer
   x = 7,798.87