Finding the Fourth Proportional to 11,271.58, 16,884.71 and 5,259.16

Step by Step Solution

1. Step 1: Write the proportion equation
   11,271.58 : 16,884.71 = 5,259.16 : x
2. Step 2: Convert to fraction form
   11,271.58/16,884.71 = 5,259.16/x
3. Step 3: Cross multiply
   11,271.58x = 16,884.71 × 5,259.16
4. Step 4: Simplify right side
   11,271.58x = 88,799,391.44
5. Step 5: Solve for x
   x = 88,799,391.44/11,271.58
6. Step 6: Final answer
   x = 7,878.17