Finding the Fourth Proportional to 22,215.52, 30,629.55 and 17,420.59

Step by Step Solution

1. Step 1: Write the proportion equation
   22,215.52 : 30,629.55 = 17,420.59 : x
2. Step 2: Convert to fraction form
   22,215.52/30,629.55 = 17,420.59/x
3. Step 3: Cross multiply
   22,215.52x = 30,629.55 × 17,420.59
4. Step 4: Simplify right side
   22,215.52x = 533,584,832.43
5. Step 5: Solve for x
   x = 533,584,832.43/22,215.52
6. Step 6: Final answer
   x = 24,018.56