Finding the Fourth Proportional to 16,100.88, 22,240.56 and 13,420.89

Step by Step Solution

1. Step 1: Write the proportion equation
   16,100.88 : 22,240.56 = 13,420.89 : x
2. Step 2: Convert to fraction form
   16,100.88/22,240.56 = 13,420.89/x
3. Step 3: Cross multiply
   16,100.88x = 22,240.56 × 13,420.89
4. Step 4: Simplify right side
   16,100.88x = 298,488,109.30
5. Step 5: Solve for x
   x = 298,488,109.30/16,100.88
6. Step 6: Final answer
   x = 18,538.62