Finding the Fourth Proportional to 11,391.72, 17,084.06 and 4,817.80

Step by Step Solution

1. Step 1: Write the proportion equation
   11,391.72 : 17,084.06 = 4,817.80 : x
2. Step 2: Convert to fraction form
   11,391.72/17,084.06 = 4,817.80/x
3. Step 3: Cross multiply
   11,391.72x = 17,084.06 × 4,817.80
4. Step 4: Simplify right side
   11,391.72x = 82,307,584.27
5. Step 5: Solve for x
   x = 82,307,584.27/11,391.72
6. Step 6: Final answer
   x = 7,225.21