Finding the Fourth Proportional to 16,980.77, 23,433.55 and 9,426.98

Step by Step Solution

1. Step 1: Write the proportion equation
   16,980.77 : 23,433.55 = 9,426.98 : x
2. Step 2: Convert to fraction form
   16,980.77/23,433.55 = 9,426.98/x
3. Step 3: Cross multiply
   16,980.77x = 23,433.55 × 9,426.98
4. Step 4: Simplify right side
   16,980.77x = 220,907,466.44
5. Step 5: Solve for x
   x = 220,907,466.44/16,980.77
6. Step 6: Final answer
   x = 13,009.28