Finding the Fourth Proportional to 4,860.60, 7,293.60 and 3,012.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,860.60 : 7,293.60 = 3,012.72 : x
2. Step 2: Convert to fraction form
   4,860.60/7,293.60 = 3,012.72/x
3. Step 3: Cross multiply
   4,860.60x = 7,293.60 × 3,012.72
4. Step 4: Simplify right side
   4,860.60x = 21,973,574.59
5. Step 5: Solve for x
   x = 21,973,574.59/4,860.60
6. Step 6: Final answer
   x = 4,520.75