Finding the Fourth Proportional to 19,314.88, 28,922.77 and 13,383.34

Step by Step Solution

1. Step 1: Write the proportion equation
   19,314.88 : 28,922.77 = 13,383.34 : x
2. Step 2: Convert to fraction form
   19,314.88/28,922.77 = 13,383.34/x
3. Step 3: Cross multiply
   19,314.88x = 28,922.77 × 13,383.34
4. Step 4: Simplify right side
   19,314.88x = 387,083,158.89
5. Step 5: Solve for x
   x = 387,083,158.89/19,314.88
6. Step 6: Final answer
   x = 20,040.67