Finding the Fourth Proportional to 3,802.10, 5,338.30 and 3,802.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,802.10 : 5,338.30 = 3,802.10 : x
2. Step 2: Convert to fraction form
   3,802.10/5,338.30 = 3,802.10/x
3. Step 3: Cross multiply
   3,802.10x = 5,338.30 × 3,802.10
4. Step 4: Simplify right side
   3,802.10x = 20,296,750.43
5. Step 5: Solve for x
   x = 20,296,750.43/3,802.10
6. Step 6: Final answer
   x = 5,338.30