Finding the Fourth Proportional to 11,818.54, 16,308.96 and 6,513.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,818.54 : 16,308.96 = 6,513.25 : x
2. Step 2: Convert to fraction form
   11,818.54/16,308.96 = 6,513.25/x
3. Step 3: Cross multiply
   11,818.54x = 16,308.96 × 6,513.25
4. Step 4: Simplify right side
   11,818.54x = 106,224,333.72
5. Step 5: Solve for x
   x = 106,224,333.72/11,818.54
6. Step 6: Final answer
   x = 8,987.94