Finding the Fourth Proportional to 10,950.72, 16,427.20 and 3,160.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,950.72 : 16,427.20 = 3,160.72 : x
2. Step 2: Convert to fraction form
   10,950.72/16,427.20 = 3,160.72/x
3. Step 3: Cross multiply
   10,950.72x = 16,427.20 × 3,160.72
4. Step 4: Simplify right side
   10,950.72x = 51,921,779.58
5. Step 5: Solve for x
   x = 51,921,779.58/10,950.72
6. Step 6: Final answer
   x = 4,741.40