Finding the Fourth Proportional to 19,707.50, 27,200.92 and 12,994.34

Step by Step Solution

1. Step 1: Write the proportion equation
   19,707.50 : 27,200.92 = 12,994.34 : x
2. Step 2: Convert to fraction form
   19,707.50/27,200.92 = 12,994.34/x
3. Step 3: Cross multiply
   19,707.50x = 27,200.92 × 12,994.34
4. Step 4: Simplify right side
   19,707.50x = 353,458,002.79
5. Step 5: Solve for x
   x = 353,458,002.79/19,707.50
6. Step 6: Final answer
   x = 17,935.20