Finding the Fourth Proportional to 23,931.18, 33,023.52 and 13,320.54

Step by Step Solution

1. Step 1: Write the proportion equation
   23,931.18 : 33,023.52 = 13,320.54 : x
2. Step 2: Convert to fraction form
   23,931.18/33,023.52 = 13,320.54/x
3. Step 3: Cross multiply
   23,931.18x = 33,023.52 × 13,320.54
4. Step 4: Simplify right side
   23,931.18x = 439,891,119.10
5. Step 5: Solve for x
   x = 439,891,119.10/23,931.18
6. Step 6: Final answer
   x = 18,381.51