Finding the Fourth Proportional to 9,136.47, 13,624.49 and 9,053.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,136.47 : 13,624.49 = 9,053.31 : x
2. Step 2: Convert to fraction form
   9,136.47/13,624.49 = 9,053.31/x
3. Step 3: Cross multiply
   9,136.47x = 13,624.49 × 9,053.31
4. Step 4: Simplify right side
   9,136.47x = 123,346,686.30
5. Step 5: Solve for x
   x = 123,346,686.30/9,136.47
6. Step 6: Final answer
   x = 13,500.48