Finding the Fourth Proportional to 16,051.89, 22,151.16 and 8,978.37

Step by Step Solution

1. Step 1: Write the proportion equation
   16,051.89 : 22,151.16 = 8,978.37 : x
2. Step 2: Convert to fraction form
   16,051.89/22,151.16 = 8,978.37/x
3. Step 3: Cross multiply
   16,051.89x = 22,151.16 × 8,978.37
4. Step 4: Simplify right side
   16,051.89x = 198,881,310.41
5. Step 5: Solve for x
   x = 198,881,310.41/16,051.89
6. Step 6: Final answer
   x = 12,389.90