Finding the Fourth Proportional to 4,870.72, 7,313.76 and 4,225.60

Step by Step Solution

1. Step 1: Write the proportion equation
   4,870.72 : 7,313.76 = 4,225.60 : x
2. Step 2: Convert to fraction form
   4,870.72/7,313.76 = 4,225.60/x
3. Step 3: Cross multiply
   4,870.72x = 7,313.76 × 4,225.60
4. Step 4: Simplify right side
   4,870.72x = 30,905,024.26
5. Step 5: Solve for x
   x = 30,905,024.26/4,870.72
6. Step 6: Final answer
   x = 6,345.06