Finding the Fourth Proportional to 10,350.69, 14,289.57 and 7,812.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,350.69 : 14,289.57 = 7,812.69 : x
2. Step 2: Convert to fraction form
   10,350.69/14,289.57 = 7,812.69/x
3. Step 3: Cross multiply
   10,350.69x = 14,289.57 × 7,812.69
4. Step 4: Simplify right side
   10,350.69x = 111,639,980.64
5. Step 5: Solve for x
   x = 111,639,980.64/10,350.69
6. Step 6: Final answer
   x = 10,785.75