Finding the Fourth Proportional to 10,149.80, 15,215.47 and 3,905.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,149.80 : 15,215.47 = 3,905.83 : x
2. Step 2: Convert to fraction form
   10,149.80/15,215.47 = 3,905.83/x
3. Step 3: Cross multiply
   10,149.80x = 15,215.47 × 3,905.83
4. Step 4: Simplify right side
   10,149.80x = 59,428,991.39
5. Step 5: Solve for x
   x = 59,428,991.39/10,149.80
6. Step 6: Final answer
   x = 5,855.19