Finding the Fourth Proportional to 10,810.67, 16,219.98 and 3,791.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,810.67 : 16,219.98 = 3,791.21 : x
2. Step 2: Convert to fraction form
   10,810.67/16,219.98 = 3,791.21/x
3. Step 3: Cross multiply
   10,810.67x = 16,219.98 × 3,791.21
4. Step 4: Simplify right side
   10,810.67x = 61,493,269.28
5. Step 5: Solve for x
   x = 61,493,269.28/10,810.67
6. Step 6: Final answer
   x = 5,688.20