Finding the Fourth Proportional to 7,002.57, 9,663.55 and 3,858.76

Step by Step Solution

1. Step 1: Write the proportion equation
   7,002.57 : 9,663.55 = 3,858.76 : x
2. Step 2: Convert to fraction form
   7,002.57/9,663.55 = 3,858.76/x
3. Step 3: Cross multiply
   7,002.57x = 9,663.55 × 3,858.76
4. Step 4: Simplify right side
   7,002.57x = 37,289,320.20
5. Step 5: Solve for x
   x = 37,289,320.20/7,002.57
6. Step 6: Final answer
   x = 5,325.09