Finding the Fourth Proportional to 10,390.34, 14,338.76 and 5,674.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,390.34 : 14,338.76 = 5,674.70 : x
2. Step 2: Convert to fraction form
   10,390.34/14,338.76 = 5,674.70/x
3. Step 3: Cross multiply
   10,390.34x = 14,338.76 × 5,674.70
4. Step 4: Simplify right side
   10,390.34x = 81,368,061.30
5. Step 5: Solve for x
   x = 81,368,061.30/10,390.34
6. Step 6: Final answer
   x = 7,831.13