Finding the Fourth Proportional to 23,990.67, 33,109.70 and 13,383.99

Step by Step Solution

1. Step 1: Write the proportion equation
   23,990.67 : 33,109.70 = 13,383.99 : x
2. Step 2: Convert to fraction form
   23,990.67/33,109.70 = 13,383.99/x
3. Step 3: Cross multiply
   23,990.67x = 33,109.70 × 13,383.99
4. Step 4: Simplify right side
   23,990.67x = 443,139,826.78
5. Step 5: Solve for x
   x = 443,139,826.78/23,990.67
6. Step 6: Final answer
   x = 18,471.34