Finding the Fourth Proportional to 13,401.59, 18,492.21 and 7,433.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,401.59 : 18,492.21 = 7,433.31 : x
2. Step 2: Convert to fraction form
   13,401.59/18,492.21 = 7,433.31/x
3. Step 3: Cross multiply
   13,401.59x = 18,492.21 × 7,433.31
4. Step 4: Simplify right side
   13,401.59x = 137,458,329.52
5. Step 5: Solve for x
   x = 137,458,329.52/13,401.59
6. Step 6: Final answer
   x = 10,256.87