Finding the Fourth Proportional to 7,758.87, 10,719.77 and 5,411.49

Step by Step Solution

1. Step 1: Write the proportion equation
   7,758.87 : 10,719.77 = 5,411.49 : x
2. Step 2: Convert to fraction form
   7,758.87/10,719.77 = 5,411.49/x
3. Step 3: Cross multiply
   7,758.87x = 10,719.77 × 5,411.49
4. Step 4: Simplify right side
   7,758.87x = 58,009,928.16
5. Step 5: Solve for x
   x = 58,009,928.16/7,758.87
6. Step 6: Final answer
   x = 7,476.59