Finding the Fourth Proportional to 28,105.45, 42,165.47 and 14,947

Step by Step Solution

1. Step 1: Write the proportion equation
   28,105.45 : 42,165.47 = 14,947 : x
2. Step 2: Convert to fraction form
   28,105.45/42,165.47 = 14,947/x
3. Step 3: Cross multiply
   28,105.45x = 42,165.47 × 14,947
4. Step 4: Simplify right side
   28,105.45x = 630,247,205.36
5. Step 5: Solve for x
   x = 630,247,205.36/28,105.45
6. Step 6: Final answer
   x = 22,424.38