Finding the Fourth Proportional to 28,162.76, 42,252.12 and 14,105.81

Step by Step Solution

1. Step 1: Write the proportion equation
   28,162.76 : 42,252.12 = 14,105.81 : x
2. Step 2: Convert to fraction form
   28,162.76/42,252.12 = 14,105.81/x
3. Step 3: Cross multiply
   28,162.76x = 42,252.12 × 14,105.81
4. Step 4: Simplify right side
   28,162.76x = 596,000,376.82
5. Step 5: Solve for x
   x = 596,000,376.82/28,162.76
6. Step 6: Final answer
   x = 21,162.71