Finding the Fourth Proportional to 6,782.50, 9,359.94 and 3,988

Step by Step Solution

1. Step 1: Write the proportion equation
   6,782.50 : 9,359.94 = 3,988 : x
2. Step 2: Convert to fraction form
   6,782.50/9,359.94 = 3,988/x
3. Step 3: Cross multiply
   6,782.50x = 9,359.94 × 3,988
4. Step 4: Simplify right side
   6,782.50x = 37,327,440.72
5. Step 5: Solve for x
   x = 37,327,440.72/6,782.50
6. Step 6: Final answer
   x = 5,503.49