Finding the Fourth Proportional to 6,783.21, 9,360.50 and 3,716.99

Step by Step Solution

1. Step 1: Write the proportion equation
   6,783.21 : 9,360.50 = 3,716.99 : x
2. Step 2: Convert to fraction form
   6,783.21/9,360.50 = 3,716.99/x
3. Step 3: Cross multiply
   6,783.21x = 9,360.50 × 3,716.99
4. Step 4: Simplify right side
   6,783.21x = 34,792,854.61
5. Step 5: Solve for x
   x = 34,792,854.61/6,783.21
6. Step 6: Final answer
   x = 5,129.26