Finding the Fourth Proportional to 16,520.96, 22,809.60 and 10,939.52

Step by Step Solution

1. Step 1: Write the proportion equation
   16,520.96 : 22,809.60 = 10,939.52 : x
2. Step 2: Convert to fraction form
   16,520.96/22,809.60 = 10,939.52/x
3. Step 3: Cross multiply
   16,520.96x = 22,809.60 × 10,939.52
4. Step 4: Simplify right side
   16,520.96x = 249,526,075.39
5. Step 5: Solve for x
   x = 249,526,075.39/16,520.96
6. Step 6: Final answer
   x = 15,103.61