Finding the Fourth Proportional to 13,401.11, 18,493.41 and 7,432.79

Step by Step Solution

1. Step 1: Write the proportion equation
   13,401.11 : 18,493.41 = 7,432.79 : x
2. Step 2: Convert to fraction form
   13,401.11/18,493.41 = 7,432.79/x
3. Step 3: Cross multiply
   13,401.11x = 18,493.41 × 7,432.79
4. Step 4: Simplify right side
   13,401.11x = 137,457,632.91
5. Step 5: Solve for x
   x = 137,457,632.91/13,401.11
6. Step 6: Final answer
   x = 10,257.18