Finding the Fourth Proportional to 8,742.57, 12,064.72 and 4,763.68

Step by Step Solution

1. Step 1: Write the proportion equation
   8,742.57 : 12,064.72 = 4,763.68 : x
2. Step 2: Convert to fraction form
   8,742.57/12,064.72 = 4,763.68/x
3. Step 3: Cross multiply
   8,742.57x = 12,064.72 × 4,763.68
4. Step 4: Simplify right side
   8,742.57x = 57,472,465.37
5. Step 5: Solve for x
   x = 57,472,465.37/8,742.57
6. Step 6: Final answer
   x = 6,573.86