Finding the Fourth Proportional to 10,645.61, 15,958.46 and 3,620.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,645.61 : 15,958.46 = 3,620.82 : x
2. Step 2: Convert to fraction form
   10,645.61/15,958.46 = 3,620.82/x
3. Step 3: Cross multiply
   10,645.61x = 15,958.46 × 3,620.82
4. Step 4: Simplify right side
   10,645.61x = 57,782,693.03
5. Step 5: Solve for x
   x = 57,782,693.03/10,645.61
6. Step 6: Final answer
   x = 5,427.84