Finding the Fourth Proportional to 16,052.60, 22,152.64 and 8,978.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,052.60 : 22,152.64 = 8,978.56 : x
2. Step 2: Convert to fraction form
   16,052.60/22,152.64 = 8,978.56/x
3. Step 3: Cross multiply
   16,052.60x = 22,152.64 × 8,978.56
4. Step 4: Simplify right side
   16,052.60x = 198,898,807.40
5. Step 5: Solve for x
   x = 198,898,807.40/16,052.60
6. Step 6: Final answer
   x = 12,390.44