Finding the Fourth Proportional to 16,661.60, 22,982.32 and 13,123.36

Step by Step Solution

1. Step 1: Write the proportion equation
   16,661.60 : 22,982.32 = 13,123.36 : x
2. Step 2: Convert to fraction form
   16,661.60/22,982.32 = 13,123.36/x
3. Step 3: Cross multiply
   16,661.60x = 22,982.32 × 13,123.36
4. Step 4: Simplify right side
   16,661.60x = 301,605,259.00
5. Step 5: Solve for x
   x = 301,605,259.00/16,661.60
6. Step 6: Final answer
   x = 18,101.82