Finding the Fourth Proportional to 6,077.28, 8,386.80 and 3,720.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,077.28 : 8,386.80 = 3,720.72 : x
2. Step 2: Convert to fraction form
   6,077.28/8,386.80 = 3,720.72/x
3. Step 3: Cross multiply
   6,077.28x = 8,386.80 × 3,720.72
4. Step 4: Simplify right side
   6,077.28x = 31,204,934.50
5. Step 5: Solve for x
   x = 31,204,934.50/6,077.28
6. Step 6: Final answer
   x = 5,134.69