Finding the Fourth Proportional to 10,321.60, 14,243.82 and 5,605.87

Step by Step Solution

1. Step 1: Write the proportion equation
   10,321.60 : 14,243.82 = 5,605.87 : x
2. Step 2: Convert to fraction form
   10,321.60/14,243.82 = 5,605.87/x
3. Step 3: Cross multiply
   10,321.60x = 14,243.82 × 5,605.87
4. Step 4: Simplify right side
   10,321.60x = 79,849,003.22
5. Step 5: Solve for x
   x = 79,849,003.22/10,321.60
6. Step 6: Final answer
   x = 7,736.11