Finding the Fourth Proportional to 8,938.72, 12,335.38 and 5,161.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,938.72 : 12,335.38 = 5,161.83 : x
2. Step 2: Convert to fraction form
   8,938.72/12,335.38 = 5,161.83/x
3. Step 3: Cross multiply
   8,938.72x = 12,335.38 × 5,161.83
4. Step 4: Simplify right side
   8,938.72x = 63,673,134.55
5. Step 5: Solve for x
   x = 63,673,134.55/8,938.72
6. Step 6: Final answer
   x = 7,123.29