Finding the Fourth Proportional to 16,620.92, 22,913.90 and 13,275

Step by Step Solution

1. Step 1: Write the proportion equation
   16,620.92 : 22,913.90 = 13,275 : x
2. Step 2: Convert to fraction form
   16,620.92/22,913.90 = 13,275/x
3. Step 3: Cross multiply
   16,620.92x = 22,913.90 × 13,275
4. Step 4: Simplify right side
   16,620.92x = 304,182,022.50
5. Step 5: Solve for x
   x = 304,182,022.50/16,620.92
6. Step 6: Final answer
   x = 18,301.15