Finding the Fourth Proportional to 16,639.82, 24,964.89 and 9,983.74

Step by Step Solution

1. Step 1: Write the proportion equation
   16,639.82 : 24,964.89 = 9,983.74 : x
2. Step 2: Convert to fraction form
   16,639.82/24,964.89 = 9,983.74/x
3. Step 3: Cross multiply
   16,639.82x = 24,964.89 × 9,983.74
4. Step 4: Simplify right side
   16,639.82x = 249,242,970.89
5. Step 5: Solve for x
   x = 249,242,970.89/16,639.82
6. Step 6: Final answer
   x = 14,978.71