Finding the Fourth Proportional to 10,209.35, 15,304.78 and 7,090.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,209.35 : 15,304.78 = 7,090.83 : x
2. Step 2: Convert to fraction form
   10,209.35/15,304.78 = 7,090.83/x
3. Step 3: Cross multiply
   10,209.35x = 15,304.78 × 7,090.83
4. Step 4: Simplify right side
   10,209.35x = 108,523,616.03
5. Step 5: Solve for x
   x = 108,523,616.03/10,209.35
6. Step 6: Final answer
   x = 10,629.82