Finding the Fourth Proportional to 11,884.85, 16,395.94 and 7,166.51

Step by Step Solution

1. Step 1: Write the proportion equation
   11,884.85 : 16,395.94 = 7,166.51 : x
2. Step 2: Convert to fraction form
   11,884.85/16,395.94 = 7,166.51/x
3. Step 3: Cross multiply
   11,884.85x = 16,395.94 × 7,166.51
4. Step 4: Simplify right side
   11,884.85x = 117,501,685.89
5. Step 5: Solve for x
   x = 117,501,685.89/11,884.85
6. Step 6: Final answer
   x = 9,886.68