Finding the Fourth Proportional to 10,890.87, 16,332.72 and 3,493.56

Step by Step Solution

1. Step 1: Write the proportion equation
   10,890.87 : 16,332.72 = 3,493.56 : x
2. Step 2: Convert to fraction form
   10,890.87/16,332.72 = 3,493.56/x
3. Step 3: Cross multiply
   10,890.87x = 16,332.72 × 3,493.56
4. Step 4: Simplify right side
   10,890.87x = 57,059,337.28
5. Step 5: Solve for x
   x = 57,059,337.28/10,890.87
6. Step 6: Final answer
   x = 5,239.19