Finding the Fourth Proportional to 16,669.85, 23,004.89 and 9,116.06

Step by Step Solution

1. Step 1: Write the proportion equation
   16,669.85 : 23,004.89 = 9,116.06 : x
2. Step 2: Convert to fraction form
   16,669.85/23,004.89 = 9,116.06/x
3. Step 3: Cross multiply
   16,669.85x = 23,004.89 × 9,116.06
4. Step 4: Simplify right side
   16,669.85x = 209,713,865.30
5. Step 5: Solve for x
   x = 209,713,865.30/16,669.85
6. Step 6: Final answer
   x = 12,580.43