Finding the Fourth Proportional to 10,806.01, 16,209.84 and 4,145.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,806.01 : 16,209.84 = 4,145.69 : x
2. Step 2: Convert to fraction form
   10,806.01/16,209.84 = 4,145.69/x
3. Step 3: Cross multiply
   10,806.01x = 16,209.84 × 4,145.69
4. Step 4: Simplify right side
   10,806.01x = 67,200,981.95
5. Step 5: Solve for x
   x = 67,200,981.95/10,806.01
6. Step 6: Final answer
   x = 6,218.86