Finding the Fourth Proportional to 7,805.60, 10,772.72 and 5,119.08

Step by Step Solution

1. Step 1: Write the proportion equation
   7,805.60 : 10,772.72 = 5,119.08 : x
2. Step 2: Convert to fraction form
   7,805.60/10,772.72 = 5,119.08/x
3. Step 3: Cross multiply
   7,805.60x = 10,772.72 × 5,119.08
4. Step 4: Simplify right side
   7,805.60x = 55,146,389.90
5. Step 5: Solve for x
   x = 55,146,389.90/7,805.60
6. Step 6: Final answer
   x = 7,064.98