Finding the Fourth Proportional to 16,688.13, 23,029.59 and 9,134.46

Step by Step Solution

1. Step 1: Write the proportion equation
   16,688.13 : 23,029.59 = 9,134.46 : x
2. Step 2: Convert to fraction form
   16,688.13/23,029.59 = 9,134.46/x
3. Step 3: Cross multiply
   16,688.13x = 23,029.59 × 9,134.46
4. Step 4: Simplify right side
   16,688.13x = 210,362,868.67
5. Step 5: Solve for x
   x = 210,362,868.67/16,688.13
6. Step 6: Final answer
   x = 12,605.54