Finding the Fourth Proportional to 11,013.89, 16,516.17 and 4,438.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,013.89 : 16,516.17 = 4,438.31 : x
2. Step 2: Convert to fraction form
   11,013.89/16,516.17 = 4,438.31/x
3. Step 3: Cross multiply
   11,013.89x = 16,516.17 × 4,438.31
4. Step 4: Simplify right side
   11,013.89x = 73,303,799.89
5. Step 5: Solve for x
   x = 73,303,799.89/11,013.89
6. Step 6: Final answer
   x = 6,655.58