Finding the Fourth Proportional to 16,532.56, 22,814.96 and 8,978.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,532.56 : 22,814.96 = 8,978.88 : x
2. Step 2: Convert to fraction form
   16,532.56/22,814.96 = 8,978.88/x
3. Step 3: Cross multiply
   16,532.56x = 22,814.96 × 8,978.88
4. Step 4: Simplify right side
   16,532.56x = 204,852,788.04
5. Step 5: Solve for x
   x = 204,852,788.04/16,532.56
6. Step 6: Final answer
   x = 12,390.87