Finding the Fourth Proportional to 13,379.72, 18,464.18 and 7,411.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,379.72 : 18,464.18 = 7,411.50 : x
2. Step 2: Convert to fraction form
   13,379.72/18,464.18 = 7,411.50/x
3. Step 3: Cross multiply
   13,379.72x = 18,464.18 × 7,411.50
4. Step 4: Simplify right side
   13,379.72x = 136,847,233.01
5. Step 5: Solve for x
   x = 136,847,233.01/13,379.72
6. Step 6: Final answer
   x = 10,227.96