Finding the Fourth Proportional to 10,355.27, 15,539.58 and 3,780.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,355.27 : 15,539.58 = 3,780.90 : x
2. Step 2: Convert to fraction form
   10,355.27/15,539.58 = 3,780.90/x
3. Step 3: Cross multiply
   10,355.27x = 15,539.58 × 3,780.90
4. Step 4: Simplify right side
   10,355.27x = 58,753,598.02
5. Step 5: Solve for x
   x = 58,753,598.02/10,355.27
6. Step 6: Final answer
   x = 5,673.79