Finding the Fourth Proportional to 3,849.59, 5,277.80 and 3,779.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,849.59 : 5,277.80 = 3,779.53 : x
2. Step 2: Convert to fraction form
   3,849.59/5,277.80 = 3,779.53/x
3. Step 3: Cross multiply
   3,849.59x = 5,277.80 × 3,779.53
4. Step 4: Simplify right side
   3,849.59x = 19,947,599.69
5. Step 5: Solve for x
   x = 19,947,599.69/3,849.59
6. Step 6: Final answer
   x = 5,181.74