Finding the Fourth Proportional to 4,978.99, 7,470.20 and 3,127.94

Step by Step Solution

1. Step 1: Write the proportion equation
   4,978.99 : 7,470.20 = 3,127.94 : x
2. Step 2: Convert to fraction form
   4,978.99/7,470.20 = 3,127.94/x
3. Step 3: Cross multiply
   4,978.99x = 7,470.20 × 3,127.94
4. Step 4: Simplify right side
   4,978.99x = 23,366,348.08
5. Step 5: Solve for x
   x = 23,366,348.08/4,978.99
6. Step 6: Final answer
   x = 4,692.99