Finding the Fourth Proportional to 11,255.29, 16,886.58 and 5,411.14

Step by Step Solution

1. Step 1: Write the proportion equation
   11,255.29 : 16,886.58 = 5,411.14 : x
2. Step 2: Convert to fraction form
   11,255.29/16,886.58 = 5,411.14/x
3. Step 3: Cross multiply
   11,255.29x = 16,886.58 × 5,411.14
4. Step 4: Simplify right side
   11,255.29x = 91,375,648.50
5. Step 5: Solve for x
   x = 91,375,648.50/11,255.29
6. Step 6: Final answer
   x = 8,118.46