Finding the Fourth Proportional to 23,290.37, 32,139.79 and 13,218.59

Step by Step Solution

1. Step 1: Write the proportion equation
   23,290.37 : 32,139.79 = 13,218.59 : x
2. Step 2: Convert to fraction form
   23,290.37/32,139.79 = 13,218.59/x
3. Step 3: Cross multiply
   23,290.37x = 32,139.79 × 13,218.59
4. Step 4: Simplify right side
   23,290.37x = 424,842,754.00
5. Step 5: Solve for x
   x = 424,842,754.00/23,290.37
6. Step 6: Final answer
   x = 18,241.13