Finding the Fourth Proportional to 11,284.16, 16,913.16 and 5,432.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,284.16 : 16,913.16 = 5,432.72 : x
2. Step 2: Convert to fraction form
   11,284.16/16,913.16 = 5,432.72/x
3. Step 3: Cross multiply
   11,284.16x = 16,913.16 × 5,432.72
4. Step 4: Simplify right side
   11,284.16x = 91,884,462.60
5. Step 5: Solve for x
   x = 91,884,462.60/11,284.16
6. Step 6: Final answer
   x = 8,142.78