Finding the Fourth Proportional to 12,674.38, 17,490.10 and 7,368.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,674.38 : 17,490.10 = 7,368.79 : x
2. Step 2: Convert to fraction form
   12,674.38/17,490.10 = 7,368.79/x
3. Step 3: Cross multiply
   12,674.38x = 17,490.10 × 7,368.79
4. Step 4: Simplify right side
   12,674.38x = 128,880,873.98
5. Step 5: Solve for x
   x = 128,880,873.98/12,674.38
6. Step 6: Final answer
   x = 10,168.61