Finding the Fourth Proportional to 10,347.63, 14,279.54 and 5,631.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,347.63 : 14,279.54 = 5,631.81 : x
2. Step 2: Convert to fraction form
   10,347.63/14,279.54 = 5,631.81/x
3. Step 3: Cross multiply
   10,347.63x = 14,279.54 × 5,631.81
4. Step 4: Simplify right side
   10,347.63x = 80,419,628.01
5. Step 5: Solve for x
   x = 80,419,628.01/10,347.63
6. Step 6: Final answer
   x = 7,771.79