Finding the Fourth Proportional to 9,152.59, 12,622.42 and 7,136.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,152.59 : 12,622.42 = 7,136.50 : x
2. Step 2: Convert to fraction form
   9,152.59/12,622.42 = 7,136.50/x
3. Step 3: Cross multiply
   9,152.59x = 12,622.42 × 7,136.50
4. Step 4: Simplify right side
   9,152.59x = 90,079,900.33
5. Step 5: Solve for x
   x = 90,079,900.33/9,152.59
6. Step 6: Final answer
   x = 9,842.01