Finding the Fourth Proportional to 22,211.99, 30,632.69 and 18,429.15

Step by Step Solution

1. Step 1: Write the proportion equation
   22,211.99 : 30,632.69 = 18,429.15 : x
2. Step 2: Convert to fraction form
   22,211.99/30,632.69 = 18,429.15/x
3. Step 3: Cross multiply
   22,211.99x = 30,632.69 × 18,429.15
4. Step 4: Simplify right side
   22,211.99x = 564,534,438.91
5. Step 5: Solve for x
   x = 564,534,438.91/22,211.99
6. Step 6: Final answer
   x = 25,415.75