Finding the Fourth Proportional to 11,416.30, 17,116.16 and 7,709.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11,416.30 : 17,116.16 = 7,709.34 : x
2. Step 2: Convert to fraction form
   11,416.30/17,116.16 = 7,709.34/x
3. Step 3: Cross multiply
   11,416.30x = 17,116.16 × 7,709.34
4. Step 4: Simplify right side
   11,416.30x = 131,954,296.93
5. Step 5: Solve for x
   x = 131,954,296.93/11,416.30
6. Step 6: Final answer
   x = 11,558.41