Finding the Fourth Proportional to 10,816.53, 16,225.70 and 3,420.82

Step by Step Solution

1. Step 1: Write the proportion equation
   10,816.53 : 16,225.70 = 3,420.82 : x
2. Step 2: Convert to fraction form
   10,816.53/16,225.70 = 3,420.82/x
3. Step 3: Cross multiply
   10,816.53x = 16,225.70 × 3,420.82
4. Step 4: Simplify right side
   10,816.53x = 55,505,221.49
5. Step 5: Solve for x
   x = 55,505,221.49/10,816.53
6. Step 6: Final answer
   x = 5,131.52