Finding the Fourth Proportional to 3,788.56, 5,221.83 and 2,902.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,788.56 : 5,221.83 = 2,902.42 : x
2. Step 2: Convert to fraction form
   3,788.56/5,221.83 = 2,902.42/x
3. Step 3: Cross multiply
   3,788.56x = 5,221.83 × 2,902.42
4. Step 4: Simplify right side
   3,788.56x = 15,155,943.83
5. Step 5: Solve for x
   x = 15,155,943.83/3,788.56
6. Step 6: Final answer
   x = 4,000.45