Finding the Fourth Proportional to 28,476, 42,722.72 and 10,008

Step by Step Solution

1. Step 1: Write the proportion equation
   28,476 : 42,722.72 = 10,008 : x
2. Step 2: Convert to fraction form
   28,476/42,722.72 = 10,008/x
3. Step 3: Cross multiply
   28,476x = 42,722.72 × 10,008
4. Step 4: Simplify right side
   28,476x = 427,568,981.76
5. Step 5: Solve for x
   x = 427,568,981.76/28,476
6. Step 6: Final answer
   x = 15,015.06