Finding the Fourth Proportional to 3,870.60, 5,819.92 and 3,566.13

Step by Step Solution

1. Step 1: Write the proportion equation
   3,870.60 : 5,819.92 = 3,566.13 : x
2. Step 2: Convert to fraction form
   3,870.60/5,819.92 = 3,566.13/x
3. Step 3: Cross multiply
   3,870.60x = 5,819.92 × 3,566.13
4. Step 4: Simplify right side
   3,870.60x = 20,754,582.39
5. Step 5: Solve for x
   x = 20,754,582.39/3,870.60
6. Step 6: Final answer
   x = 5,362.11