Finding the Fourth Proportional to 10,851.29, 16,278.15 and 3,453.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,851.29 : 16,278.15 = 3,453.15 : x
2. Step 2: Convert to fraction form
   10,851.29/16,278.15 = 3,453.15/x
3. Step 3: Cross multiply
   10,851.29x = 16,278.15 × 3,453.15
4. Step 4: Simplify right side
   10,851.29x = 56,210,893.67
5. Step 5: Solve for x
   x = 56,210,893.67/10,851.29
6. Step 6: Final answer
   x = 5,180.11