Finding the Fourth Proportional to 23,016.48, 31,765.86 and 13,459.20

Step by Step Solution

1. Step 1: Write the proportion equation
   23,016.48 : 31,765.86 = 13,459.20 : x
2. Step 2: Convert to fraction form
   23,016.48/31,765.86 = 13,459.20/x
3. Step 3: Cross multiply
   23,016.48x = 31,765.86 × 13,459.20
4. Step 4: Simplify right side
   23,016.48x = 427,543,062.91
5. Step 5: Solve for x
   x = 427,543,062.91/23,016.48
6. Step 6: Final answer
   x = 18,575.52