Finding the Fourth Proportional to 28,162.86, 38,862.12 and 16,830.12

Step by Step Solution

1. Step 1: Write the proportion equation
   28,162.86 : 38,862.12 = 16,830.12 : x
2. Step 2: Convert to fraction form
   28,162.86/38,862.12 = 16,830.12/x
3. Step 3: Cross multiply
   28,162.86x = 38,862.12 × 16,830.12
4. Step 4: Simplify right side
   28,162.86x = 654,054,143.05
5. Step 5: Solve for x
   x = 654,054,143.05/28,162.86
6. Step 6: Final answer
   x = 23,224.00