Finding the Fourth Proportional to 10,347.41, 14,279.42 and 5,631.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,347.41 : 14,279.42 = 5,631.72 : x
2. Step 2: Convert to fraction form
   10,347.41/14,279.42 = 5,631.72/x
3. Step 3: Cross multiply
   10,347.41x = 14,279.42 × 5,631.72
4. Step 4: Simplify right side
   10,347.41x = 80,417,730.90
5. Step 5: Solve for x
   x = 80,417,730.90/10,347.41
6. Step 6: Final answer
   x = 7,771.78