Finding the Fourth Proportional to 16,015.98, 22,089.89 and 13,781.60

Step by Step Solution

1. Step 1: Write the proportion equation
   16,015.98 : 22,089.89 = 13,781.60 : x
2. Step 2: Convert to fraction form
   16,015.98/22,089.89 = 13,781.60/x
3. Step 3: Cross multiply
   16,015.98x = 22,089.89 × 13,781.60
4. Step 4: Simplify right side
   16,015.98x = 304,434,028.02
5. Step 5: Solve for x
   x = 304,434,028.02/16,015.98
6. Step 6: Final answer
   x = 19,008.14