Finding the Fourth Proportional to 28,443.42, 42,607.98 and 14,168.88

Step by Step Solution

1. Step 1: Write the proportion equation
   28,443.42 : 42,607.98 = 14,168.88 : x
2. Step 2: Convert to fraction form
   28,443.42/42,607.98 = 14,168.88/x
3. Step 3: Cross multiply
   28,443.42x = 42,607.98 × 14,168.88
4. Step 4: Simplify right side
   28,443.42x = 603,707,355.66
5. Step 5: Solve for x
   x = 603,707,355.66/28,443.42
6. Step 6: Final answer
   x = 21,224.85