Finding the Fourth Proportional to 12,056.98, 18,089.43 and 7,609.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,056.98 : 18,089.43 = 7,609.50 : x
2. Step 2: Convert to fraction form
   12,056.98/18,089.43 = 7,609.50/x
3. Step 3: Cross multiply
   12,056.98x = 18,089.43 × 7,609.50
4. Step 4: Simplify right side
   12,056.98x = 137,651,517.59
5. Step 5: Solve for x
   x = 137,651,517.59/12,056.98
6. Step 6: Final answer
   x = 11,416.75