Finding the Fourth Proportional to 11,680.26, 17,522.69 and 4,284.78

Step by Step Solution

1. Step 1: Write the proportion equation
   11,680.26 : 17,522.69 = 4,284.78 : x
2. Step 2: Convert to fraction form
   11,680.26/17,522.69 = 4,284.78/x
3. Step 3: Cross multiply
   11,680.26x = 17,522.69 × 4,284.78
4. Step 4: Simplify right side
   11,680.26x = 75,080,800.59
5. Step 5: Solve for x
   x = 75,080,800.59/11,680.26
6. Step 6: Final answer
   x = 6,428.01