Finding the Fourth Proportional to 9,136.93, 12,606.82 and 5,359.90

Step by Step Solution

1. Step 1: Write the proportion equation
   9,136.93 : 12,606.82 = 5,359.90 : x
2. Step 2: Convert to fraction form
   9,136.93/12,606.82 = 5,359.90/x
3. Step 3: Cross multiply
   9,136.93x = 12,606.82 × 5,359.90
4. Step 4: Simplify right side
   9,136.93x = 67,571,294.52
5. Step 5: Solve for x
   x = 67,571,294.52/9,136.93
6. Step 6: Final answer
   x = 7,395.40