Finding the Fourth Proportional to 5,788.89, 7,988.71 and 3,136.30

Step by Step Solution

1. Step 1: Write the proportion equation
   5,788.89 : 7,988.71 = 3,136.30 : x
2. Step 2: Convert to fraction form
   5,788.89/7,988.71 = 3,136.30/x
3. Step 3: Cross multiply
   5,788.89x = 7,988.71 × 3,136.30
4. Step 4: Simplify right side
   5,788.89x = 25,054,991.17
5. Step 5: Solve for x
   x = 25,054,991.17/5,788.89
6. Step 6: Final answer
   x = 4,328.12