Finding the Fourth Proportional to 16,411.95, 24,628.80 and 9,021.57

Step by Step Solution

1. Step 1: Write the proportion equation
   16,411.95 : 24,628.80 = 9,021.57 : x
2. Step 2: Convert to fraction form
   16,411.95/24,628.80 = 9,021.57/x
3. Step 3: Cross multiply
   16,411.95x = 24,628.80 × 9,021.57
4. Step 4: Simplify right side
   16,411.95x = 222,190,443.22
5. Step 5: Solve for x
   x = 222,190,443.22/16,411.95
6. Step 6: Final answer
   x = 13,538.33