Finding the Fourth Proportional to 10,947, 16,422.96 and 3,155.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,947 : 16,422.96 = 3,155.22 : x
2. Step 2: Convert to fraction form
   10,947/16,422.96 = 3,155.22/x
3. Step 3: Cross multiply
   10,947x = 16,422.96 × 3,155.22
4. Step 4: Simplify right side
   10,947x = 51,818,051.85
5. Step 5: Solve for x
   x = 51,818,051.85/10,947
6. Step 6: Final answer
   x = 4,733.54