Finding the Fourth Proportional to 7,152.17, 10,729.63 and 2,221.86

Step by Step Solution

1. Step 1: Write the proportion equation
   7,152.17 : 10,729.63 = 2,221.86 : x
2. Step 2: Convert to fraction form
   7,152.17/10,729.63 = 2,221.86/x
3. Step 3: Cross multiply
   7,152.17x = 10,729.63 × 2,221.86
4. Step 4: Simplify right side
   7,152.17x = 23,839,678.82
5. Step 5: Solve for x
   x = 23,839,678.82/7,152.17
6. Step 6: Final answer
   x = 3,333.21