Finding the Fourth Proportional to 9,136.63, 12,606.41 and 5,359.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,136.63 : 12,606.41 = 5,359.60 : x
2. Step 2: Convert to fraction form
   9,136.63/12,606.41 = 5,359.60/x
3. Step 3: Cross multiply
   9,136.63x = 12,606.41 × 5,359.60
4. Step 4: Simplify right side
   9,136.63x = 67,565,377.88
5. Step 5: Solve for x
   x = 67,565,377.88/9,136.63
6. Step 6: Final answer
   x = 7,395.00