Finding the Fourth Proportional to 23,900.58, 32,981.00 and 13,289.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,900.58 : 32,981.00 = 13,289.31 : x
2. Step 2: Convert to fraction form
   23,900.58/32,981.00 = 13,289.31/x
3. Step 3: Cross multiply
   23,900.58x = 32,981.00 × 13,289.31
4. Step 4: Simplify right side
   23,900.58x = 438,294,666.66
5. Step 5: Solve for x
   x = 438,294,666.66/23,900.58
6. Step 6: Final answer
   x = 18,338.24