Finding the Fourth Proportional to 13,944.42, 19,238.56 and 7,971.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,944.42 : 19,238.56 = 7,971.86 : x
2. Step 2: Convert to fraction form
   13,944.42/19,238.56 = 7,971.86/x
3. Step 3: Cross multiply
   13,944.42x = 19,238.56 × 7,971.86
4. Step 4: Simplify right side
   13,944.42x = 153,367,106.92
5. Step 5: Solve for x
   x = 153,367,106.92/13,944.42
6. Step 6: Final answer
   x = 10,998.46