Finding the Fourth Proportional to 7,002.45, 10,506.71 and 3,878.69

Step by Step Solution

1. Step 1: Write the proportion equation
   7,002.45 : 10,506.71 = 3,878.69 : x
2. Step 2: Convert to fraction form
   7,002.45/10,506.71 = 3,878.69/x
3. Step 3: Cross multiply
   7,002.45x = 10,506.71 × 3,878.69
4. Step 4: Simplify right side
   7,002.45x = 40,752,228.17
5. Step 5: Solve for x
   x = 40,752,228.17/7,002.45
6. Step 6: Final answer
   x = 5,819.71