Finding the Fourth Proportional to 11,665.93, 17,509.42 and 7,908.62

Step by Step Solution

1. Step 1: Write the proportion equation
   11,665.93 : 17,509.42 = 7,908.62 : x
2. Step 2: Convert to fraction form
   11,665.93/17,509.42 = 7,908.62/x
3. Step 3: Cross multiply
   11,665.93x = 17,509.42 × 7,908.62
4. Step 4: Simplify right side
   11,665.93x = 138,475,285.66
5. Step 5: Solve for x
   x = 138,475,285.66/11,665.93
6. Step 6: Final answer
   x = 11,870.06