Finding the Fourth Proportional to 9,819.31, 14,727.07 and 3,815.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,819.31 : 14,727.07 = 3,815.38 : x
2. Step 2: Convert to fraction form
   9,819.31/14,727.07 = 3,815.38/x
3. Step 3: Cross multiply
   9,819.31x = 14,727.07 × 3,815.38
4. Step 4: Simplify right side
   9,819.31x = 56,189,356.75
5. Step 5: Solve for x
   x = 56,189,356.75/9,819.31
6. Step 6: Final answer
   x = 5,722.33