Finding the Fourth Proportional to 10,347, 14,278.71 and 5,631.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,347 : 14,278.71 = 5,631.18 : x
2. Step 2: Convert to fraction form
   10,347/14,278.71 = 5,631.18/x
3. Step 3: Cross multiply
   10,347x = 14,278.71 × 5,631.18
4. Step 4: Simplify right side
   10,347x = 80,405,986.18
5. Step 5: Solve for x
   x = 80,405,986.18/10,347
6. Step 6: Final answer
   x = 7,770.95