Finding the Fourth Proportional to 16,699.80, 23,035.46 and 13,109.34

Step by Step Solution

1. Step 1: Write the proportion equation
   16,699.80 : 23,035.46 = 13,109.34 : x
2. Step 2: Convert to fraction form
   16,699.80/23,035.46 = 13,109.34/x
3. Step 3: Cross multiply
   16,699.80x = 23,035.46 × 13,109.34
4. Step 4: Simplify right side
   16,699.80x = 301,979,677.20
5. Step 5: Solve for x
   x = 301,979,677.20/16,699.80
6. Step 6: Final answer
   x = 18,082.83