Finding the Fourth Proportional to 10,674.71, 16,019.93 and 5,131.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,674.71 : 16,019.93 = 5,131.25 : x
2. Step 2: Convert to fraction form
   10,674.71/16,019.93 = 5,131.25/x
3. Step 3: Cross multiply
   10,674.71x = 16,019.93 × 5,131.25
4. Step 4: Simplify right side
   10,674.71x = 82,202,265.81
5. Step 5: Solve for x
   x = 82,202,265.81/10,674.71
6. Step 6: Final answer
   x = 7,700.66