Finding the Fourth Proportional to 12,892.38, 17,791.54 and 7,518

Step by Step Solution

1. Step 1: Write the proportion equation
   12,892.38 : 17,791.54 = 7,518 : x
2. Step 2: Convert to fraction form
   12,892.38/17,791.54 = 7,518/x
3. Step 3: Cross multiply
   12,892.38x = 17,791.54 × 7,518
4. Step 4: Simplify right side
   12,892.38x = 133,756,797.72
5. Step 5: Solve for x
   x = 133,756,797.72/12,892.38
6. Step 6: Final answer
   x = 10,374.87