Finding the Fourth Proportional to 12,740.43, 19,092.17 and 7,181.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,740.43 : 19,092.17 = 7,181.92 : x
2. Step 2: Convert to fraction form
   12,740.43/19,092.17 = 7,181.92/x
3. Step 3: Cross multiply
   12,740.43x = 19,092.17 × 7,181.92
4. Step 4: Simplify right side
   12,740.43x = 137,118,341.69
5. Step 5: Solve for x
   x = 137,118,341.69/12,740.43
6. Step 6: Final answer
   x = 10,762.46