Finding the Fourth Proportional to 11,811.86, 16,300.50 and 6,506.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,811.86 : 16,300.50 = 6,506.72 : x
2. Step 2: Convert to fraction form
   11,811.86/16,300.50 = 6,506.72/x
3. Step 3: Cross multiply
   11,811.86x = 16,300.50 × 6,506.72
4. Step 4: Simplify right side
   11,811.86x = 106,062,789.36
5. Step 5: Solve for x
   x = 106,062,789.36/11,811.86
6. Step 6: Final answer
   x = 8,979.35