Finding the Fourth Proportional to 4,978.58, 7,465.10 and 3,287.07

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.58 : 7,465.10 = 3,287.07 : x
2. Step 2: Convert to fraction form
   4,978.58/7,465.10 = 3,287.07/x
3. Step 3: Cross multiply
   4,978.58x = 7,465.10 × 3,287.07
4. Step 4: Simplify right side
   4,978.58x = 24,538,289.82
5. Step 5: Solve for x
   x = 24,538,289.82/4,978.58
6. Step 6: Final answer
   x = 4,928.78