Finding the Fourth Proportional to 4,782.56, 6,597.69 and 3,188.78

Step by Step Solution

1. Step 1: Write the proportion equation
   4,782.56 : 6,597.69 = 3,188.78 : x
2. Step 2: Convert to fraction form
   4,782.56/6,597.69 = 3,188.78/x
3. Step 3: Cross multiply
   4,782.56x = 6,597.69 × 3,188.78
4. Step 4: Simplify right side
   4,782.56x = 21,038,561.71
5. Step 5: Solve for x
   x = 21,038,561.71/4,782.56
6. Step 6: Final answer
   x = 4,399.02