Finding the Fourth Proportional to 11,076.56, 16,610.55 and 4,321.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,076.56 : 16,610.55 = 4,321.31 : x
2. Step 2: Convert to fraction form
   11,076.56/16,610.55 = 4,321.31/x
3. Step 3: Cross multiply
   11,076.56x = 16,610.55 × 4,321.31
4. Step 4: Simplify right side
   11,076.56x = 71,779,252.77
5. Step 5: Solve for x
   x = 71,779,252.77/11,076.56
6. Step 6: Final answer
   x = 6,480.29