Finding the Fourth Proportional to 11,782.72, 16,260.18 and 6,477.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,782.72 : 16,260.18 = 6,477.55 : x
2. Step 2: Convert to fraction form
   11,782.72/16,260.18 = 6,477.55/x
3. Step 3: Cross multiply
   11,782.72x = 16,260.18 × 6,477.55
4. Step 4: Simplify right side
   11,782.72x = 105,326,128.96
5. Step 5: Solve for x
   x = 105,326,128.96/11,782.72
6. Step 6: Final answer
   x = 8,939.03