Finding the Fourth Proportional to 10,851.30, 16,278.17 and 3,453.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,851.30 : 16,278.17 = 3,453.98 : x
2. Step 2: Convert to fraction form
   10,851.30/16,278.17 = 3,453.98/x
3. Step 3: Cross multiply
   10,851.30x = 16,278.17 × 3,453.98
4. Step 4: Simplify right side
   10,851.30x = 56,224,374.96
5. Step 5: Solve for x
   x = 56,224,374.96/10,851.30
6. Step 6: Final answer
   x = 5,181.35