Finding the Fourth Proportional to 16,689.01, 23,030.83 and 9,135.37

Step by Step Solution

1. Step 1: Write the proportion equation
   16,689.01 : 23,030.83 = 9,135.37 : x
2. Step 2: Convert to fraction form
   16,689.01/23,030.83 = 9,135.37/x
3. Step 3: Cross multiply
   16,689.01x = 23,030.83 × 9,135.37
4. Step 4: Simplify right side
   16,689.01x = 210,395,153.46
5. Step 5: Solve for x
   x = 210,395,153.46/16,689.01
6. Step 6: Final answer
   x = 12,606.81