Finding the Fourth Proportional to 13,401.02, 18,493.50 and 7,432.79

Step by Step Solution

1. Step 1: Write the proportion equation
   13,401.02 : 18,493.50 = 7,432.79 : x
2. Step 2: Convert to fraction form
   13,401.02/18,493.50 = 7,432.79/x
3. Step 3: Cross multiply
   13,401.02x = 18,493.50 × 7,432.79
4. Step 4: Simplify right side
   13,401.02x = 137,458,231.80
5. Step 5: Solve for x
   x = 137,458,231.80/13,401.02
6. Step 6: Final answer
   x = 10,257.30