Finding the Fourth Proportional to 13,441.09, 18,549.18 and 7,391.80

Step by Step Solution

1. Step 1: Write the proportion equation
   13,441.09 : 18,549.18 = 7,391.80 : x
2. Step 2: Convert to fraction form
   13,441.09/18,549.18 = 7,391.80/x
3. Step 3: Cross multiply
   13,441.09x = 18,549.18 × 7,391.80
4. Step 4: Simplify right side
   13,441.09x = 137,111,828.72
5. Step 5: Solve for x
   x = 137,111,828.72/13,441.09
6. Step 6: Final answer
   x = 10,200.95