Finding the Fourth Proportional to 12,743.31, 19,080.71 and 10,393.62

Step by Step Solution

1. Step 1: Write the proportion equation
   12,743.31 : 19,080.71 = 10,393.62 : x
2. Step 2: Convert to fraction form
   12,743.31/19,080.71 = 10,393.62/x
3. Step 3: Cross multiply
   12,743.31x = 19,080.71 × 10,393.62
4. Step 4: Simplify right side
   12,743.31x = 198,317,597.10
5. Step 5: Solve for x
   x = 198,317,597.10/12,743.31
6. Step 6: Final answer
   x = 15,562.49