Finding the Fourth Proportional to 4,742.72, 7,100.64 and 3,200.96

Step by Step Solution

1. Step 1: Write the proportion equation
   4,742.72 : 7,100.64 = 3,200.96 : x
2. Step 2: Convert to fraction form
   4,742.72/7,100.64 = 3,200.96/x
3. Step 3: Cross multiply
   4,742.72x = 7,100.64 × 3,200.96
4. Step 4: Simplify right side
   4,742.72x = 22,728,864.61
5. Step 5: Solve for x
   x = 22,728,864.61/4,742.72
6. Step 6: Final answer
   x = 4,792.37