Finding the Fourth Proportional to 17,994.85, 26,996.83 and 12,740.15

Step by Step Solution

1. Step 1: Write the proportion equation
   17,994.85 : 26,996.83 = 12,740.15 : x
2. Step 2: Convert to fraction form
   17,994.85/26,996.83 = 12,740.15/x
3. Step 3: Cross multiply
   17,994.85x = 26,996.83 × 12,740.15
4. Step 4: Simplify right side
   17,994.85x = 343,943,699.37
5. Step 5: Solve for x
   x = 343,943,699.37/17,994.85
6. Step 6: Final answer
   x = 19,113.45