Finding the Fourth Proportional to 13,019.62, 17,957.82 and 8,987.98

Step by Step Solution

1. Step 1: Write the proportion equation
   13,019.62 : 17,957.82 = 8,987.98 : x
2. Step 2: Convert to fraction form
   13,019.62/17,957.82 = 8,987.98/x
3. Step 3: Cross multiply
   13,019.62x = 17,957.82 × 8,987.98
4. Step 4: Simplify right side
   13,019.62x = 161,404,527.00
5. Step 5: Solve for x
   x = 161,404,527.00/13,019.62
6. Step 6: Final answer
   x = 12,397.02