Finding the Fourth Proportional to 11,715.05, 16,166.57 and 7,177.03

Step by Step Solution

1. Step 1: Write the proportion equation
   11,715.05 : 16,166.57 = 7,177.03 : x
2. Step 2: Convert to fraction form
   11,715.05/16,166.57 = 7,177.03/x
3. Step 3: Cross multiply
   11,715.05x = 16,166.57 × 7,177.03
4. Step 4: Simplify right side
   11,715.05x = 116,027,957.89
5. Step 5: Solve for x
   x = 116,027,957.89/11,715.05
6. Step 6: Final answer
   x = 9,904.18