Finding the Fourth Proportional to 13,922.42, 19,212.71 and 7,872.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,922.42 : 19,212.71 = 7,872.56 : x
2. Step 2: Convert to fraction form
   13,922.42/19,212.71 = 7,872.56/x
3. Step 3: Cross multiply
   13,922.42x = 19,212.71 × 7,872.56
4. Step 4: Simplify right side
   13,922.42x = 151,253,220.91
5. Step 5: Solve for x
   x = 151,253,220.91/13,922.42
6. Step 6: Final answer
   x = 10,864.00