Finding the Fourth Proportional to 10,821.52, 16,230.86 and 3,426.02

Step by Step Solution

1. Step 1: Write the proportion equation
   10,821.52 : 16,230.86 = 3,426.02 : x
2. Step 2: Convert to fraction form
   10,821.52/16,230.86 = 3,426.02/x
3. Step 3: Cross multiply
   10,821.52x = 16,230.86 × 3,426.02
4. Step 4: Simplify right side
   10,821.52x = 55,607,152.69
5. Step 5: Solve for x
   x = 55,607,152.69/10,821.52
6. Step 6: Final answer
   x = 5,138.57