Finding the Fourth Proportional to 16,402.03, 22,645.69 and 12,618.52

Step by Step Solution

1. Step 1: Write the proportion equation
   16,402.03 : 22,645.69 = 12,618.52 : x
2. Step 2: Convert to fraction form
   16,402.03/22,645.69 = 12,618.52/x
3. Step 3: Cross multiply
   16,402.03x = 22,645.69 × 12,618.52
4. Step 4: Simplify right side
   16,402.03x = 285,754,978.95
5. Step 5: Solve for x
   x = 285,754,978.95/16,402.03
6. Step 6: Final answer
   x = 17,421.93