Finding the Fourth Proportional to 9,136.81, 12,608.04 and 5,359.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,136.81 : 12,608.04 = 5,359.58 : x
2. Step 2: Convert to fraction form
   9,136.81/12,608.04 = 5,359.58/x
3. Step 3: Cross multiply
   9,136.81x = 12,608.04 × 5,359.58
4. Step 4: Simplify right side
   9,136.81x = 67,573,773.21
5. Step 5: Solve for x
   x = 67,573,773.21/9,136.81
6. Step 6: Final answer
   x = 7,395.77