Finding the Fourth Proportional to 11,298.68, 16,942.56 and 3,900.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,298.68 : 16,942.56 = 3,900.55 : x
2. Step 2: Convert to fraction form
   11,298.68/16,942.56 = 3,900.55/x
3. Step 3: Cross multiply
   11,298.68x = 16,942.56 × 3,900.55
4. Step 4: Simplify right side
   11,298.68x = 66,085,245.42
5. Step 5: Solve for x
   x = 66,085,245.42/11,298.68
6. Step 6: Final answer
   x = 5,848.93