Finding the Fourth Proportional to 10,007.69, 14,998.10 and 7,789.19

Step by Step Solution

1. Step 1: Write the proportion equation
   10,007.69 : 14,998.10 = 7,789.19 : x
2. Step 2: Convert to fraction form
   10,007.69/14,998.10 = 7,789.19/x
3. Step 3: Cross multiply
   10,007.69x = 14,998.10 × 7,789.19
4. Step 4: Simplify right side
   10,007.69x = 116,822,936.60
5. Step 5: Solve for x
   x = 116,822,936.60/10,007.69
6. Step 6: Final answer
   x = 11,673.32