Finding the Fourth Proportional to 5,146.71, 7,717.89 and 2,222.91

Step by Step Solution

1. Step 1: Write the proportion equation
   5,146.71 : 7,717.89 = 2,222.91 : x
2. Step 2: Convert to fraction form
   5,146.71/7,717.89 = 2,222.91/x
3. Step 3: Cross multiply
   5,146.71x = 7,717.89 × 2,222.91
4. Step 4: Simplify right side
   5,146.71x = 17,156,174.86
5. Step 5: Solve for x
   x = 17,156,174.86/5,146.71
6. Step 6: Final answer
   x = 3,333.43