Finding the Fourth Proportional to 11,257.27, 16,876.42 and 5,330.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,257.27 : 16,876.42 = 5,330.72 : x
2. Step 2: Convert to fraction form
   11,257.27/16,876.42 = 5,330.72/x
3. Step 3: Cross multiply
   11,257.27x = 16,876.42 × 5,330.72
4. Step 4: Simplify right side
   11,257.27x = 89,963,498.49
5. Step 5: Solve for x
   x = 89,963,498.49/11,257.27
6. Step 6: Final answer
   x = 7,991.59