Finding the Fourth Proportional to 10,199.31, 15,299.34 and 2,804.35

Step by Step Solution

1. Step 1: Write the proportion equation
   10,199.31 : 15,299.34 = 2,804.35 : x
2. Step 2: Convert to fraction form
   10,199.31/15,299.34 = 2,804.35/x
3. Step 3: Cross multiply
   10,199.31x = 15,299.34 × 2,804.35
4. Step 4: Simplify right side
   10,199.31x = 42,904,665.88
5. Step 5: Solve for x
   x = 42,904,665.88/10,199.31
6. Step 6: Final answer
   x = 4,206.62