Finding the Fourth Proportional to 7,002.05, 10,492.74 and 3,878.28

Step by Step Solution

1. Step 1: Write the proportion equation
   7,002.05 : 10,492.74 = 3,878.28 : x
2. Step 2: Convert to fraction form
   7,002.05/10,492.74 = 3,878.28/x
3. Step 3: Cross multiply
   7,002.05x = 10,492.74 × 3,878.28
4. Step 4: Simplify right side
   7,002.05x = 40,693,783.69
5. Step 5: Solve for x
   x = 40,693,783.69/7,002.05
6. Step 6: Final answer
   x = 5,811.70