Finding the Fourth Proportional to 10,390.32, 14,338.76 and 5,674.91

Step by Step Solution

1. Step 1: Write the proportion equation
   10,390.32 : 14,338.76 = 5,674.91 : x
2. Step 2: Convert to fraction form
   10,390.32/14,338.76 = 5,674.91/x
3. Step 3: Cross multiply
   10,390.32x = 14,338.76 × 5,674.91
4. Step 4: Simplify right side
   10,390.32x = 81,371,072.44
5. Step 5: Solve for x
   x = 81,371,072.44/10,390.32
6. Step 6: Final answer
   x = 7,831.43