Finding the Fourth Proportional to 11,920.84, 16,443.92 and 7,436.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,920.84 : 16,443.92 = 7,436.80 : x
2. Step 2: Convert to fraction form
   11,920.84/16,443.92 = 7,436.80/x
3. Step 3: Cross multiply
   11,920.84x = 16,443.92 × 7,436.80
4. Step 4: Simplify right side
   11,920.84x = 122,290,144.26
5. Step 5: Solve for x
   x = 122,290,144.26/11,920.84
6. Step 6: Final answer
   x = 10,258.52