Finding the Fourth Proportional to 16,685.61, 23,023.87 and 9,969.82

Step by Step Solution

1. Step 1: Write the proportion equation
   16,685.61 : 23,023.87 = 9,969.82 : x
2. Step 2: Convert to fraction form
   16,685.61/23,023.87 = 9,969.82/x
3. Step 3: Cross multiply
   16,685.61x = 23,023.87 × 9,969.82
4. Step 4: Simplify right side
   16,685.61x = 229,543,839.60
5. Step 5: Solve for x
   x = 229,543,839.60/16,685.61
6. Step 6: Final answer
   x = 13,756.99