Finding the Fourth Proportional to 10,890.68, 16,333.62 and 3,493.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,890.68 : 16,333.62 = 3,493.72 : x
2. Step 2: Convert to fraction form
   10,890.68/16,333.62 = 3,493.72/x
3. Step 3: Cross multiply
   10,890.68x = 16,333.62 × 3,493.72
4. Step 4: Simplify right side
   10,890.68x = 57,065,094.87
5. Step 5: Solve for x
   x = 57,065,094.87/10,890.68
6. Step 6: Final answer
   x = 5,239.81