Finding the Fourth Proportional to 13,401.98, 18,495.72 and 7,433.60

Step by Step Solution

1. Step 1: Write the proportion equation
   13,401.98 : 18,495.72 = 7,433.60 : x
2. Step 2: Convert to fraction form
   13,401.98/18,495.72 = 7,433.60/x
3. Step 3: Cross multiply
   13,401.98x = 18,495.72 × 7,433.60
4. Step 4: Simplify right side
   13,401.98x = 137,489,784.19
5. Step 5: Solve for x
   x = 137,489,784.19/13,401.98
6. Step 6: Final answer
   x = 10,258.92