Finding the Fourth Proportional to 5,429.39, 8,145.62 and 2,798.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,429.39 : 8,145.62 = 2,798.82 : x
2. Step 2: Convert to fraction form
   5,429.39/8,145.62 = 2,798.82/x
3. Step 3: Cross multiply
   5,429.39x = 8,145.62 × 2,798.82
4. Step 4: Simplify right side
   5,429.39x = 22,798,096.81
5. Step 5: Solve for x
   x = 22,798,096.81/5,429.39
6. Step 6: Final answer
   x = 4,199.02