Finding the Fourth Proportional to 7,152.16, 10,730.02 and 2,221.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,152.16 : 10,730.02 = 2,221.72 : x
2. Step 2: Convert to fraction form
   7,152.16/10,730.02 = 2,221.72/x
3. Step 3: Cross multiply
   7,152.16x = 10,730.02 × 2,221.72
4. Step 4: Simplify right side
   7,152.16x = 23,839,100.03
5. Step 5: Solve for x
   x = 23,839,100.03/7,152.16
6. Step 6: Final answer
   x = 3,333.13