Finding the Fourth Proportional to 23,173.12, 31,978.56 and 13,101.24

Step by Step Solution

1. Step 1: Write the proportion equation
   23,173.12 : 31,978.56 = 13,101.24 : x
2. Step 2: Convert to fraction form
   23,173.12/31,978.56 = 13,101.24/x
3. Step 3: Cross multiply
   23,173.12x = 31,978.56 × 13,101.24
4. Step 4: Simplify right side
   23,173.12x = 418,958,958.46
5. Step 5: Solve for x
   x = 418,958,958.46/23,173.12
6. Step 6: Final answer
   x = 18,079.52