Finding the Fourth Proportional to 12,743.54, 19,099.18 and 7,200.01

Step by Step Solution

1. Step 1: Write the proportion equation
   12,743.54 : 19,099.18 = 7,200.01 : x
2. Step 2: Convert to fraction form
   12,743.54/19,099.18 = 7,200.01/x
3. Step 3: Cross multiply
   12,743.54x = 19,099.18 × 7,200.01
4. Step 4: Simplify right side
   12,743.54x = 137,514,171.93
5. Step 5: Solve for x
   x = 137,514,171.93/12,743.54
6. Step 6: Final answer
   x = 10,790.89