Finding the Fourth Proportional to 11,323.64, 16,868.71 and 10,979.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,323.64 : 16,868.71 = 10,979.72 : x
2. Step 2: Convert to fraction form
   11,323.64/16,868.71 = 10,979.72/x
3. Step 3: Cross multiply
   11,323.64x = 16,868.71 × 10,979.72
4. Step 4: Simplify right side
   11,323.64x = 185,213,712.56
5. Step 5: Solve for x
   x = 185,213,712.56/11,323.64
6. Step 6: Final answer
   x = 16,356.38