Finding the Fourth Proportional to 16,013.62, 22,106.89 and 10,979.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,013.62 : 22,106.89 = 10,979.88 : x
2. Step 2: Convert to fraction form
   16,013.62/22,106.89 = 10,979.88/x
3. Step 3: Cross multiply
   16,013.62x = 22,106.89 × 10,979.88
4. Step 4: Simplify right side
   16,013.62x = 242,730,999.37
5. Step 5: Solve for x
   x = 242,730,999.37/16,013.62
6. Step 6: Final answer
   x = 15,157.78