Finding the Fourth Proportional to 5,196.30, 7,788.69 and 3,119.10

Step by Step Solution

1. Step 1: Write the proportion equation
   5,196.30 : 7,788.69 = 3,119.10 : x
2. Step 2: Convert to fraction form
   5,196.30/7,788.69 = 3,119.10/x
3. Step 3: Cross multiply
   5,196.30x = 7,788.69 × 3,119.10
4. Step 4: Simplify right side
   5,196.30x = 24,293,702.98
5. Step 5: Solve for x
   x = 24,293,702.98/5,196.30
6. Step 6: Final answer
   x = 4,675.19