Finding the Fourth Proportional to 16,052.32, 22,152.30 and 8,978.86

Step by Step Solution

1. Step 1: Write the proportion equation
   16,052.32 : 22,152.30 = 8,978.86 : x
2. Step 2: Convert to fraction form
   16,052.32/22,152.30 = 8,978.86/x
3. Step 3: Cross multiply
   16,052.32x = 22,152.30 × 8,978.86
4. Step 4: Simplify right side
   16,052.32x = 198,902,400.38
5. Step 5: Solve for x
   x = 198,902,400.38/16,052.32
6. Step 6: Final answer
   x = 12,390.88