Finding the Fourth Proportional to 23,201.60, 32,016.07 and 13,128.41

Step by Step Solution

1. Step 1: Write the proportion equation
   23,201.60 : 32,016.07 = 13,128.41 : x
2. Step 2: Convert to fraction form
   23,201.60/32,016.07 = 13,128.41/x
3. Step 3: Cross multiply
   23,201.60x = 32,016.07 × 13,128.41
4. Step 4: Simplify right side
   23,201.60x = 420,320,093.55
5. Step 5: Solve for x
   x = 420,320,093.55/23,201.60
6. Step 6: Final answer
   x = 18,116.00