Finding the Fourth Proportional to 11,380.40, 17,072.88 and 4,806.56

Step by Step Solution

1. Step 1: Write the proportion equation
   11,380.40 : 17,072.88 = 4,806.56 : x
2. Step 2: Convert to fraction form
   11,380.40/17,072.88 = 4,806.56/x
3. Step 3: Cross multiply
   11,380.40x = 17,072.88 × 4,806.56
4. Step 4: Simplify right side
   11,380.40x = 82,061,822.09
5. Step 5: Solve for x
   x = 82,061,822.09/11,380.40
6. Step 6: Final answer
   x = 7,210.80