Finding the Fourth Proportional to 10,347.42, 14,279.46 and 5,631.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,347.42 : 14,279.46 = 5,631.70 : x
2. Step 2: Convert to fraction form
   10,347.42/14,279.46 = 5,631.70/x
3. Step 3: Cross multiply
   10,347.42x = 14,279.46 × 5,631.70
4. Step 4: Simplify right side
   10,347.42x = 80,417,634.88
5. Step 5: Solve for x
   x = 80,417,634.88/10,347.42
6. Step 6: Final answer
   x = 7,771.76