Finding the Fourth Proportional to 11,662.38, 17,477.91 and 6,389.46

Step by Step Solution

1. Step 1: Write the proportion equation
   11,662.38 : 17,477.91 = 6,389.46 : x
2. Step 2: Convert to fraction form
   11,662.38/17,477.91 = 6,389.46/x
3. Step 3: Cross multiply
   11,662.38x = 17,477.91 × 6,389.46
4. Step 4: Simplify right side
   11,662.38x = 111,674,406.83
5. Step 5: Solve for x
   x = 111,674,406.83/11,662.38
6. Step 6: Final answer
   x = 9,575.61