Finding the Fourth Proportional to 11,400.69, 17,106.45 and 7,896.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,400.69 : 17,106.45 = 7,896.09 : x
2. Step 2: Convert to fraction form
   11,400.69/17,106.45 = 7,896.09/x
3. Step 3: Cross multiply
   11,400.69x = 17,106.45 × 7,896.09
4. Step 4: Simplify right side
   11,400.69x = 135,074,068.78
5. Step 5: Solve for x
   x = 135,074,068.78/11,400.69
6. Step 6: Final answer
   x = 11,847.89