Finding the Fourth Proportional to 18,221.98, 25,145.31 and 10,045.32

Step by Step Solution

1. Step 1: Write the proportion equation
   18,221.98 : 25,145.31 = 10,045.32 : x
2. Step 2: Convert to fraction form
   18,221.98/25,145.31 = 10,045.32/x
3. Step 3: Cross multiply
   18,221.98x = 25,145.31 × 10,045.32
4. Step 4: Simplify right side
   18,221.98x = 252,592,628.82
5. Step 5: Solve for x
   x = 252,592,628.82/18,221.98
6. Step 6: Final answer
   x = 13,861.98