Finding the Fourth Proportional to 16,430.37, 22,673.89 and 8,978.37

Step by Step Solution

1. Step 1: Write the proportion equation
   16,430.37 : 22,673.89 = 8,978.37 : x
2. Step 2: Convert to fraction form
   16,430.37/22,673.89 = 8,978.37/x
3. Step 3: Cross multiply
   16,430.37x = 22,673.89 × 8,978.37
4. Step 4: Simplify right side
   16,430.37x = 203,574,415.50
5. Step 5: Solve for x
   x = 203,574,415.50/16,430.37
6. Step 6: Final answer
   x = 12,390.13