Finding the Fourth Proportional to 9,136.71, 12,604.55 and 5,360.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,136.71 : 12,604.55 = 5,360.09 : x
2. Step 2: Convert to fraction form
   9,136.71/12,604.55 = 5,360.09/x
3. Step 3: Cross multiply
   9,136.71x = 12,604.55 × 5,360.09
4. Step 4: Simplify right side
   9,136.71x = 67,561,432.59
5. Step 5: Solve for x
   x = 67,561,432.59/9,136.71
6. Step 6: Final answer
   x = 7,394.50