Finding the Fourth Proportional to 16,051.54, 22,151.24 and 8,978.08

Step by Step Solution

1. Step 1: Write the proportion equation
   16,051.54 : 22,151.24 = 8,978.08 : x
2. Step 2: Convert to fraction form
   16,051.54/22,151.24 = 8,978.08/x
3. Step 3: Cross multiply
   16,051.54x = 22,151.24 × 8,978.08
4. Step 4: Simplify right side
   16,051.54x = 198,875,604.82
5. Step 5: Solve for x
   x = 198,875,604.82/16,051.54
6. Step 6: Final answer
   x = 12,389.81