Finding the Fourth Proportional to 15,624.30, 21,571.61 and 13,942.82

Step by Step Solution

1. Step 1: Write the proportion equation
   15,624.30 : 21,571.61 = 13,942.82 : x
2. Step 2: Convert to fraction form
   15,624.30/21,571.61 = 13,942.82/x
3. Step 3: Cross multiply
   15,624.30x = 21,571.61 × 13,942.82
4. Step 4: Simplify right side
   15,624.30x = 300,769,059.56
5. Step 5: Solve for x
   x = 300,769,059.56/15,624.30
6. Step 6: Final answer
   x = 19,250.08