Finding the Fourth Proportional to 16,641.55, 22,969.20 and 10,977.31

Step by Step Solution

1. Step 1: Write the proportion equation
   16,641.55 : 22,969.20 = 10,977.31 : x
2. Step 2: Convert to fraction form
   16,641.55/22,969.20 = 10,977.31/x
3. Step 3: Cross multiply
   16,641.55x = 22,969.20 × 10,977.31
4. Step 4: Simplify right side
   16,641.55x = 252,140,028.85
5. Step 5: Solve for x
   x = 252,140,028.85/16,641.55
6. Step 6: Final answer
   x = 15,151.23