Finding the Fourth Proportional to 16,051.32, 22,152.92 and 8,979.20

Step by Step Solution

1. Step 1: Write the proportion equation
   16,051.32 : 22,152.92 = 8,979.20 : x
2. Step 2: Convert to fraction form
   16,051.32/22,152.92 = 8,979.20/x
3. Step 3: Cross multiply
   16,051.32x = 22,152.92 × 8,979.20
4. Step 4: Simplify right side
   16,051.32x = 198,915,499.26
5. Step 5: Solve for x
   x = 198,915,499.26/16,051.32
6. Step 6: Final answer
   x = 12,392.47