Finding the Fourth Proportional to 10,713.64, 16,080.83 and 5,170.87

Step by Step Solution

1. Step 1: Write the proportion equation
   10,713.64 : 16,080.83 = 5,170.87 : x
2. Step 2: Convert to fraction form
   10,713.64/16,080.83 = 5,170.87/x
3. Step 3: Cross multiply
   10,713.64x = 16,080.83 × 5,170.87
4. Step 4: Simplify right side
   10,713.64x = 83,151,855.57
5. Step 5: Solve for x
   x = 83,151,855.57/10,713.64
6. Step 6: Final answer
   x = 7,761.31