Finding the Fourth Proportional to 6,782, 9,359.98 and 3,987.50

Step by Step Solution

1. Step 1: Write the proportion equation
   6,782 : 9,359.98 = 3,987.50 : x
2. Step 2: Convert to fraction form
   6,782/9,359.98 = 3,987.50/x
3. Step 3: Cross multiply
   6,782x = 9,359.98 × 3,987.50
4. Step 4: Simplify right side
   6,782x = 37,322,920.25
5. Step 5: Solve for x
   x = 37,322,920.25/6,782
6. Step 6: Final answer
   x = 5,503.23