Finding the Fourth Proportional to 3,708.30, 5,181.90 and 3,708.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,708.30 : 5,181.90 = 3,708.30 : x
2. Step 2: Convert to fraction form
   3,708.30/5,181.90 = 3,708.30/x
3. Step 3: Cross multiply
   3,708.30x = 5,181.90 × 3,708.30
4. Step 4: Simplify right side
   3,708.30x = 19,216,039.77
5. Step 5: Solve for x
   x = 19,216,039.77/3,708.30
6. Step 6: Final answer
   x = 5,181.90