Finding the Fourth Proportional to 13,136.54, 18,127.71 and 7,470.52

Step by Step Solution

1. Step 1: Write the proportion equation
   13,136.54 : 18,127.71 = 7,470.52 : x
2. Step 2: Convert to fraction form
   13,136.54/18,127.71 = 7,470.52/x
3. Step 3: Cross multiply
   13,136.54x = 18,127.71 × 7,470.52
4. Step 4: Simplify right side
   13,136.54x = 135,423,382.76
5. Step 5: Solve for x
   x = 135,423,382.76/13,136.54
6. Step 6: Final answer
   x = 10,308.91