Finding the Fourth Proportional to 6,077.79, 8,387.73 and 3,720.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,077.79 : 8,387.73 = 3,720.15 : x
2. Step 2: Convert to fraction form
   6,077.79/8,387.73 = 3,720.15/x
3. Step 3: Cross multiply
   6,077.79x = 8,387.73 × 3,720.15
4. Step 4: Simplify right side
   6,077.79x = 31,203,613.76
5. Step 5: Solve for x
   x = 31,203,613.76/6,077.79
6. Step 6: Final answer
   x = 5,134.04