Finding the Fourth Proportional to 20,385,200.10, 30,613,229.55 and 10,819,262.10

Step by Step Solution

1. Step 1: Write the proportion equation
   20,385,200.10 : 30,613,229.55 = 10,819,262.10 : x
2. Step 2: Convert to fraction form
   20,385,200.10/30,613,229.55 = 10,819,262.10/x
3. Step 3: Cross multiply
   20,385,200.10x = 30,613,229.55 × 10,819,262.10
4. Step 4: Simplify right side
   20,385,200.10x = 331,212,554,228,915.06
5. Step 5: Solve for x
   x = 331,212,554,228,915.06/20,385,200.10
6. Step 6: Final answer
   x = 16,247,696.99