Finding the Fourth Proportional to 4,039.98, 5,580.33 and 3,089.99

Step by Step Solution

1. Step 1: Write the proportion equation
   4,039.98 : 5,580.33 = 3,089.99 : x
2. Step 2: Convert to fraction form
   4,039.98/5,580.33 = 3,089.99/x
3. Step 3: Cross multiply
   4,039.98x = 5,580.33 × 3,089.99
4. Step 4: Simplify right side
   4,039.98x = 17,243,166.26
5. Step 5: Solve for x
   x = 17,243,166.26/4,039.98
6. Step 6: Final answer
   x = 4,268.14