Finding the Fourth Proportional to 10,865.71, 16,292.76 and 5,308.03

Step by Step Solution

1. Step 1: Write the proportion equation
   10,865.71 : 16,292.76 = 5,308.03 : x
2. Step 2: Convert to fraction form
   10,865.71/16,292.76 = 5,308.03/x
3. Step 3: Cross multiply
   10,865.71x = 16,292.76 × 5,308.03
4. Step 4: Simplify right side
   10,865.71x = 86,482,458.86
5. Step 5: Solve for x
   x = 86,482,458.86/10,865.71
6. Step 6: Final answer
   x = 7,959.21