Finding the Fourth Proportional to 6,309.50, 9,419.87 and 4,820.91

Step by Step Solution

1. Step 1: Write the proportion equation
   6,309.50 : 9,419.87 = 4,820.91 : x
2. Step 2: Convert to fraction form
   6,309.50/9,419.87 = 4,820.91/x
3. Step 3: Cross multiply
   6,309.50x = 9,419.87 × 4,820.91
4. Step 4: Simplify right side
   6,309.50x = 45,412,321.38
5. Step 5: Solve for x
   x = 45,412,321.38/6,309.50
6. Step 6: Final answer
   x = 7,197.46