Finding the Fourth Proportional to 5,678.64, 8,499.69 and 3,039.51

Step by Step Solution

1. Step 1: Write the proportion equation
   5,678.64 : 8,499.69 = 3,039.51 : x
2. Step 2: Convert to fraction form
   5,678.64/8,499.69 = 3,039.51/x
3. Step 3: Cross multiply
   5,678.64x = 8,499.69 × 3,039.51
4. Step 4: Simplify right side
   5,678.64x = 25,834,892.75
5. Step 5: Solve for x
   x = 25,834,892.75/5,678.64
6. Step 6: Final answer
   x = 4,549.49