Finding the Fourth Proportional to 11,161.71, 16,734.35 and 5,322.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,161.71 : 16,734.35 = 5,322.42 : x
2. Step 2: Convert to fraction form
   11,161.71/16,734.35 = 5,322.42/x
3. Step 3: Cross multiply
   11,161.71x = 16,734.35 × 5,322.42
4. Step 4: Simplify right side
   11,161.71x = 89,067,252.43
5. Step 5: Solve for x
   x = 89,067,252.43/11,161.71
6. Step 6: Final answer
   x = 7,979.71