Finding the Fourth Proportional to 12,743.32, 19,111.72 and 3,973.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,743.32 : 19,111.72 = 3,973.72 : x
2. Step 2: Convert to fraction form
   12,743.32/19,111.72 = 3,973.72/x
3. Step 3: Cross multiply
   12,743.32x = 19,111.72 × 3,973.72
4. Step 4: Simplify right side
   12,743.32x = 75,944,624.00
5. Step 5: Solve for x
   x = 75,944,624.00/12,743.32
6. Step 6: Final answer
   x = 5,959.56